Ask A Scientist

SCIENCE PRACTICAL ACTIVITIES Ask-A-Scientist Archive

http://www.newton.dep.anl.gov/askasci/chem98.htm 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52.

When entropy = 0, does atomic motion stop? When H2O and methanol mix Heavy element names Radon Bee's wax CFC's and ozone depletion Solar cells and Phosphorous vs Chlorophyll B Aromaticity Hypercolor t-shirt Bonds for tie dye Soda POP General chemistry questions Tyndall Effect Silicon chips Molecules and cancer Acetylene safety Picric acid Buckyballs Piezoelectric Weak pennies Extracting fats Anti-oxidants Batteries & chemicals Hydrogen, can it be an isotope? Can soda conduct electricity? pH What is the biggest molecule? Smallest molecule Metallic zinc as catalyst Bond order in carbon bonds Packing of crystal structure Advantages, disadvantages of chloroform Coloring oil Free-radicals Acid-Base reaction Carbonates Bubbles in a glass of champagne Is hydrogen a metallic element? Why can a candle be blown out? Existence of molecules New elements Hazards of Chemlight chemicals States of matter Crystal formation Fifth grade food chemistry project request Can carbon form a quadrupal bond with itself? What is the best solvent to get dipropylamine? Bucky Balls and superconductors Borax and glue - Mars Super Glue Any suggestions for doing labs for 33 students? Cleaning silver 4822747.doc

53. 54. 55. 56. 57. 58. 59. 60. 61. 62. 63. 64. 65. 66.

Learning About Inert Gasses Atomic radius of inert gases Growing crystals Inert gases and atomic radius Noble gas definition Fireworks Mercury in thermometers What do chemists do at work? Noble Metals Computer Programs for Chemistry Capsaicin Color reflection Classification of a substance Leonard-Jones Potential in computational models Cold Water Expanding

67. 68. Making vinegar from red wine 69. Glass...solid or liquid? 70. Determining mass in zero G 71. Where do the chemicals come from? 72. How much school do you need 73. Steel changing states 74. Electrolyzing AlCl3 for thermite 75. Salt Domes and Toxic Wastes 76. 4th grade question about density 77. Schrodinger equation 78. Common Chemicals: Reference 79. Reaction of sulfide with ferrous ion 80. Color pencils 81. Effects of salt on water 82. Acid 83. Periodic Table 84. Conversion of CO2 to fuel 85. Binder in aspirin 86. Explosive nitrogen tri-iodide 87. Chemical bonding in DNA 88. Lawrencium 89. Make-up 90. How To Publish a Paper 91. Ozone structure 92. Superglue danger 93. Ether / Water Coefficient 94. Electromagnetic fields and crystal growth 95. Proton Weight 96. Large scale production of fullerene steel 97. Kinetic vs thermal energy 98. Safety match puzzler 99. Uses for buckyballs 100.Cryonics? 101.Chemical formula questions 102.Chemistry of pigments and oil for paints 103.Squealing dry ice 104.PABA 105.Peppermint 106.Electron speed near 0K 107.Flame tests 108.The lack of a neutron in hydrogen 1

109.pH information 110.Delta H's and T's 111.Atomic Weight 112.Experiment: melting ice 113.Dr. Percy Julian, minority pioneer 114.Crashing electrons? 115.Home Remedy 116.Nucleophilicity of adenine and guanine 117.Salts that are less soluble at higher temperatures

118.Helium gas rising 119.Nuclear chemistry laboratory exercises request

120.Making butter 121.Petroleum Ether 122.Phase changes in ice at very low temperatures

123.Charles' and Boyle's Laws explained 124.White centers to ice cubes 125.Biographical information on Berzelius 126.Synthetic human insulin 127.Freon 128.Silver nitrate as a bacteriacide 129.Discovering new elements 130.Teaching oxidation numbers for carbon (gr. 6-8)

131.Process of electroplating 132.How Benedryl works 133.Measuring carbon dioxide 134.Interaction of salt and ice 135.Proteolytic agent 136.Ketchup is a non-Newtonian fluid 137.Electronegativity 138.Gasoline in cars 139.Carbon as a combustible fuel 140.Absolute zero 141.Dry Ice and phase changes 142.Electrons and orbiting atoms 143.Golf Club Shaft Flexibility 144.Potassium reaction with water 145.Periodic table configuration 146.Glue for PET 147.Vinegar and baking soda 148.Kinetic theory and phases of matter 149.Cleaning silver 150.Fiber optic cables 151.Toxicity of arsenic 152.Uses of oxygen 153.Copper's color 154.Element 110 155.Making alcohol 156.Periodic Table and boiling points 157.Mixing oil and water 158.Mass spectrograph/spectrometer 159.Ice cracking 160.Composition of dry ice 161.Carborn cycle and how it relates to stars 162.Chemical properties of hair C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

163.Adamantine 164.Making ice cream using snow -- a failure

165.Composition of ammonia 166.Xenon 167.Vinegar and baking soda II 168.Liquid carbon dioxide 169.Explosiveness of krypton 170.Waste plastic 171.Composition of cosmetics 172.Chemicals in bombs 173.Carbon dioxide and global warning 174.Carbon dioxide as an oxygen source 175.Density of liquid propane 176.Unsaturated fats demonstration 177.Moth Balls 178.Removing chlorine from tap water (for plants)

179.Soil improvement 180.Sulphur in water removal 181.Combustion 182.Flame composition 183.Mechanisms that clean well water 184.Table of Diatomic Molecules 185.IU (International Unit) 186.International Unit in Pharmacology 187.What is so interesting about Helium? 188.Manganese(II,III) Oxide 189.Calcium propionate and mold 190.Flammable sugar substance 191.Chemistry vs Chemcal Engineering for college?

192.Soil contaminated with nitro toluene 193.Atomic mass unit (AMU) 194.Transdermal fluids 195.Prepare me for Graduate School! 196.How is plastic made? 197.Enzymes 198.Creating water with hydrogen and oxygen

199.Fermentation discoverer? 200.Clouds 201.Removing Permanent Ink from Chalkboard

202.Green flame 203.Ultraviolet Radiation Measurement 204.Future use for Chemistry 205.Copper in Cheerios 206.Clean water experiment 207.LifeSavers 208.Iodine toxicity and wound cleansing 209.New Elements 210.Nail Polish 211.Polarized light 212.Synthetic elements 213.Element names 214.Sticky gum etc. 215.Why does popcorn "pop"? 216.Color of oil distillates 217.Between parts of the atom 218.Water bubbles 4822747.doc

219.Petroleum shortage - alternatives? 220.Colorful crystals 221.Ionic or covalent bonding? 222.Atomic structure 223.Stomach Acid 224.Formulae for pyro- and metaphosphoric acids

225.Baby Formula -- Chemical Composition 226.Asbestos 227.Carbon-Carbon bonds in diamonds 228.Bronsted-Lowry definition of acid/bases 229.Rocket fuel 230.Elements 231.Information about Octane 232.Strongest acid 233.Baking soda/Vinegar reaction 234.Flammable water 235.Lead in art 236.Chlorine and pools 237.High temp superconductors? 238.Aspirin and the blood 239.Uses for Francium? 240.Aluminum in beverages 241.A.P. Chem demos 242.Chemical weapons 243.Drop of water in space 244.Bovine Growth Hormone 245.Pills taken with food? 246.Reactions to pepper, onions 247.Flat pop 248.Solubility of solids with - heat of solution 249.Where can I get chemicals? 250.Eye contact care 251.Car airbags 252.What is a noble gas? 253.Radioactive halflifes 254.Solvent for paradichlorobenzene 255.Why is the atomic theory not law? 256.Chemical composition of pheromones 257.Element discoverers 258.VSEPR model? 259.Meniscus curve: glass vs plastic beaker 260.How can we see atoms splitting? 261.Epoxy glue 262.How can I make a volcano? 263.STD pH of beer 264.Electrochemical cell for bells 265.Optical rotation of chiral molecules 266.Polymers in Superconductivity 267.Ion colors 268.Most dangerous chemical to the ozone 269.Does ice cool? 270.Future Chemist? 271.Unleaded fuel and pollution 272.Making flash paper 273.What is a "quark?" 274.Chlorophyll Isolation 275.Quarks 276.Acupuncture 277.Organic qualitative analysis help 2

278.Post-bac programs for chem.? 279.Negative pH's? 280.Addition of Vitamins and Minerals to Cereals

281.Medicines 282.Element Symbols 283.Dangerous experiments? 284.Bad experiments 285.Periodic table 286.Predicting molecular geometries 287.Maximum dosage 288.Fourth state of matter 289.ICLE for the dissolving of salt? 290.Boiling point elevation - why? 291.Atom's surface area 292.Vanadium research 293.Endothermic reaction 294.Expansion of water when it freezes 295.Unnilhexium to Seaborgium 296.Girls in Chemistry 297.Pop Bottle Pump 298.Liquid nitrogen to make ice cream 299.Refraction 300.SPF's in sunscreens 301.SO5: persulfate or not persulfate 302.Nickle vs. cobalt 303.Silly Putty, glue, Na2O2, HOW? 304.Shrinking Plastic 305.Molecular spectroscopy 306.Everyday cleaners 307.Sugar Quantity in Juice 308.Chemiluminescence 309.Sealed jars 310.Mixture of Copper Sulfate with an Acid? 311.Isoelectric point of 1.Avidin 312.Molecular Orbital diagram for CO 313.Isolating ions experiment 314.Effect of sound waves on chemical reactions 315.Rock candy formation? 316.Periodic table groups "A" and "B" 317.Electro-luminous substances 318.Graduate School 319.Nitrogen triIodide 320.Window cleaning solution 321.Cost of making Hydrogen 322.Flurolastmec 323.Aero gel info 324.Ammonia 325.Biomedical engineering 326.Why is Hg a liquid at room temp? 327.Getting liquid nitrogen cold 328.F Orbitals 329.Ideas for discovery center? 330.Water as a Solvent in the Presence of Heat 331.7up + antifreeze + milk = explosion? 332.Distance between electron and nucleus 333.Green Grass 334.Chem questions 335.Organic / Inorganic 336.Evaporation C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

337.Liquid Plumber 338.Question on atomic bombs 339.Can plutonium kill me? 340.Medicine Flavors 341.Water's Unusual Characteristics 342.C-14 Dating 343.How to make plastic 344.Dangers of Pot 345.Teacher desperate for ideas 346.Quantum spin of the Electron, Why is it 1/2?

347.Nitroglycerine 348.Theoretical yield for Enthalpies of formation 349.Cellulose molecule thickness

350.Reference to book on glue structures 351.Aspirin from Willow Bark 352.Question on Photons 353.Chalk and bleach 354.Prediction of the path of Electrons 355.Why high nitrogen density in explosives?

356.Floating Divers 357.Hydrogen peroxide 358.Teflon pan bond 359.Periodic Table 360.Salt water corroding metals 361.Diazepam 362.Straw in Water experiment 363.Floating ships 364.Solid densities 365.Same oxygen? 366.Help balancing equations 367.Making glass 368.Keeping track of elements 369.Element 110 370.Pure gold 371.Splitting atoms 372.Thermometers 373.Breathing pollutants 374.States of Matter 375.Soap 376.Power of soaps 377.Curly hair 378.Chemical analysis of Crest 379.Squeaky voice & helium 380.Convection experiment 381.Seeing flames 382.Exposure to xylene and troulene 383.Mixtures and solutions 384.Crystal study 385.Absolute zero 386.Carbon dating of fossils 387.Electron movement 388.Helium - harmful? 389.Gold 390.Heavy atoms 391.Seeing atoms 392.Making pudding 393.Properties of polymethyl methacrylate 4822747.doc

394.Compounds and mixtures 395.Electricity 396.Chlorinated pools 397.Lemon juice preventing oxidation 398.Hot water bubbles 399.Witch hazel solvent 400.Einsteinium 401.Lemon electrolytes 402.Atom attractions 403.Semiconductors 404.Half-Lives? 405.Dry ice and water 406.History of radon 407.Unknown chemical reactions 408.Molar Volume at STP 409.Element 111 410.Trick Candles 411.Nucleus 412.Hardest element 413.Blood substitute 414.Phase changes in wood 415.Dangerous elements 416.Heating elements 417.Mystery powders 418.Grapes and Microwaves 419.Clear ice cubes 420.Marie Curie 421.Madam Marie Curie 422.Chemical reaction experiments help 423.Cold fusion theories 424.Electrolytic fusion? 425.Cold fusion kits? 426.Chemistry labs 427.Growing crystals 428.Shrinking balloons 429.Artificial elements 430.Why does copper make my skin turn green? 431.Dry Ice 432.Strongest base 433.Caffeine measurement 434.Why do plants prefer carbon 12? 435.Sulfur Dioxide Question 436.Mixing acids and bases 437.Crytal lattice formation of water 438.Chemical explosive 439.Cold cans 440.Bullet-proof glass composition 441.Acid-base-salt 442.Periodic Table of Elements 443.White gold turned yellow 444.Who discovered the atom? 445.Thermodynamics of electrolytes 446.Pons and Fleischmann experiment 447.Pi bond strength; C=O vs. C=C 448.Ammonia 449.Common acid 450.I want another Chemistry teacher 451.Freezing Air 452.Shell-less egg phenomenon 3

453.Water and radiation 454.Can crushing experiment 455.Noble gases 456.Glow-in-the-dark Chemical? 457.Wind electricity? 458.Gasoline calories 459."Diseases in the body" Questions 460.Testing for iron in fruit juice 461.How do you make soap - ingredients? 462.Need for smoke generator 463.Soapy reactions 464.How would you create saltpeter or a substitute?

465.Electrons' orbit 466.Metal melting pot 467.Liquid nitrogen 468.Mixing chemicals with polymers 469.Uses for Quarks? 470.Radiation and atomic bombs 471.Bodies made of atoms? 472.Food chemistry 473.Gun powder 474.Spontaneous combustion 475.Split an atom? 476.Does air have mass? 477.Air composition 478.Battery 479.Oklahoma City bombing 480.Crystalline Structure 481.Ions and magnets 482.Octet rule 483.Levamisole and memory loss 484.Fats or not Fats? 485.Coin Cleaning 486.Most dangerous chemical 487.Le Clanche Cell 488.Electricity and Voltage 489.Cleaning Silver 490.Chemical Reactions 491.Alcohol and Fire 492.Safety and Chemical Use 493.Fire Measurements 494.Cobalt Chloride 495.Metal conductivity 496.Burning Water 497.Chemists 498.Glycern Soap 499.Mass Loss in Burning 500.Inorganic and Organic Fertilizer 501.White Crayons 502.Candle Burning 503.Borium Hydroxide and Amonium Thiocyvate

504.Molarity and Normality 505.Shampoo 506.Hydrogen and Oxygen 507.Iodine Crystals 508.Change of State 509.Aluminum Production 510.Oxygen Enrichment of Fires C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

511.Tomato and Copper Metal 512.Cars and Gravity 513.Ozone Measurement 514.Carbon Dioxide Reactions 515.Bonding of Sucrose 516.Transuranic Elements 517.Magnetic Metals 518.Mercury Spills 519.Expanding on Freezing 520.Frozen Fingers 521.Radius and Atomic Volume of Period 3 522.Plutonium and Health 523.Periodic Table Structure 524.Mixture vs Solution 525.Production of Elements 526.Superconductivity of Iron and Copper 527.Oxidation {=} Reduction 528.Baking Soda Equation Balancing 529.Saline Solution 530.Energy Levels 531.Burning Water 532.Polar vs Nonpolar Molecules 533.Viscosity 534.Voice and Inert Gasses 535.Why crstals form? 536.Periodic Table Format 537.Metal Superconductivity 538.Mixture Type 539.Oxidation-Reduction 540.Baking Soda 541.Expansion of Glass 542.Reaction Rates 543.Unknown Hydrocarbon 544.Hot Peppers Chemistry 545.Naphthalene 546.Naphthalene and Health 547.Hydrazine 548.Carbon Dioxide Experiment 549.Boiling Solutes 550.Jumping Moth Balls 551.What is a Catalyst? 552.Ice Melting Principles 553.Acetone and Styrofoam 554.Chemical Web Sites 555.Sodium Thiosulphate 556.Boiling Points and Pressure 557.Sodium Stable Ions 558.Solid Adhesion 559.Lithium 560.Chlorine and Flourine 561.Aluminum Pollution 562.Soap 563.Petroleum Ether 564.Silica Sand and Jell 565.Boiling Chemistry 566.Aspirin 567.Mass Spectroscopy 568.Electronegativity 569.Hydrogen Chemistry 4822747.doc

570.Gas and Moisture 571.Transparent Objects 572.Baking Soda & Vinegar Equation 573.Hydrogen Energy 574.Emulsions 575.Ethanol Power 576.Freezing and Pressure 577.Decaffeination 578.Freezing Rate 579.Transparent Objects 580.Carbon Chemistry 581.Chlorine Bleach 582.Reaction Rates 583.Temperature and Solubility 584.Cooking Chemistry 585.Fixing the Ozone Layer 586.Hydrogen and Electrons 587.Evaporation Rate 588.Corrosive Coke 589.Absolute Zero 590.Bubble Molecules 591.Dry Ice Sublimation 592.Lava Lamp Composition 593.Non-Newtonian Fluids 594.Freon Properties 595.Organic Chemistry Naming 596.Acid Gas 597.Boiling Points 598.Water as a Solvent 599.Cotton Fading 600.pH and Logarithms 601.Baking Soda and Containers 602.Heated Copper and Colors 603.Alcohol 604.Nitrogen: Air to Liquid 605.Surface Area and Melting 606.Boiling at Room Temperature 607.Calcium Problem 608.Sand and Candy Crystals 609.Problem involving Calcium 610.Cyanide Poisoning 611.Cutting Paper 612.Low Temperature and Molecular Collisions 613.Low Temperature and Molecular Collisions2 614.Copper Sulfate Reaction 615.Chemical vs Physical Change 616.Dry Ice and Calories 617.Flash Paper 618.Molecules at Low Temperature 619.pH and Conductivity 620.Alcohol Poisoning 621.Mass Relationship to Volume 622.Cooling by Evaporation 623.Motion at Low Temperature 624.Freezing Mercury 625.Hydrocarbon Bonding Energy 626.Freezing Causes 627.Energy Releasing 628.Boiling at Room Temperature 4

629.Evaporation and Temperature 630.Kb Constant 631.Gasoline Combustion 632.Plant Dye Chemistry 633.Chromatography Detection 634.Bronsted-Lowry Base 635.pH Safety 636.Green Chemistry 637.Pesticide Reaction and Water 638.Calculation Delta H 639.Calculation Delta H part 2 640.Inorganics and Chromotography 641.Bunsen Burner Flame 642.Snake Venom Chemistry 643.Superglue Removal 644.Carbon Disulfide 645.Types of Fire 646.Caffeine Chemistry 647.Le Chatelier's Principal 648.Carbon Disulfide Substitute 649.Cardboard Boats 650.Lantern Mantles 651.Cyanide Death 652.Dissolving Salt 653.Boiling Point of Iodine 654.Charge Differences 655.Alcohol Separation 656.Ethers 657.Sunscreen Chemistry 658.Chlorine Processes 659.Arsenic sulfide By Product 660.Oxygen Types 661.Filtering Gasses 662.Salts and Water Softening 663.Bleach Analysis 664.Atom and Molecule Properties 665.Freon Leaks 666.Buckey balls 667.Sharpies and Linoleum 668.Beverage Gas 669.Iron Anions 670.Napthalene Neutralizer 671.Hybridization of Carbon 672.Compressed Gas 673.Acid Cleaners 674.Polyvinyl Chloride 675.Dry Ice Pressure 676.Salt Absorption 677.Acid to Base 678.Valence Shell 679.Water Freezing Clarification 680.Alcohol Evaporation 681.Acid to a Base 682.Endothermic Reactions 683.Hair Spray Removal 684.Different Iron 685.Linoleum and Sharpies 686.Dry Ice 687.Double Melting Point C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

688.pH Buffers 689.Salts 690.Cooking with Salt 691.Vinegar and Baking Soda Reaction 692.Copper Greening 693.Bonding 694.Gas Laws 695.Detecting Caffeine 696.Chemical Products 697.Water Breakdown 698.Plastic Manufacturer 699.Chemical Bonding 700.Hydrogen and Chloride 701.Heat Calculations 702.Red Phosphorus 703.pH of Soap 704.CO2 Calculations 705.Endothermic Solution 706.Gasoline 707.Water's Name 708.Proportions for Soap 709.Carbonic Acid Decomposition 710.Water Testing 711.Home Made Alcohol 712.CO2 Calculations 713.Neutralizing Acid Spills 714.Carbon Dioxide Filters 715.Marble Chips and Acids 716.Glue Solvents 717.Acid Strength Revised 718.Styrofoam Shredding 719.Polar vs Non-polar 720.Orbital Speed 721.Watery pH 722.Dioxines 723.Pure Water Molarity 724.Fire and Water 725.CFC Experiment 726.Iodine 727.Alcohol as a Cleaner 728.Bonding and Magnets 729.Solution Properties 730.Pink Silver 731.Selenium Chloride 732.Brønsted-Lowry Acids and Bases 733.Benzene Bonding 734.Wet Flame 735.Amphoteric 736.Solution Properties 737.Gasoline and Magnetism 738.Ammonia Catalyst 739.Surface Area and Rate of Reaction 740.Noble Name 741.Atoms and Spitting 742.Exploding Paint 743.Periodic Table Information 744.Oxidative Color Change 745.Freon Damage 746.Water Ionization 4822747.doc

747.Color Change and Oxygen 748.What is glass? 749.Burning Plastic 750.Who's First? 751.Explosion Science 752.Fuel Cells and Hydrolysis 753.Water Properties and Altitude 754.Gasoline Additives 755.Protein Decomposition 756.Melting Plastics 757.Chemical Valence 758.Coal Burning Emissions 759.CFC Alternatives 760.Oxydation 761.Acid Neutralizer 762.Chemical Bonds and Noise 763.Water as a Solvent 764.Bleach Neutralizer 765.Activation Energy 766.Mole Heat 767.Heating and Properties 768.Water Reaction Products 769.Bleach Neutralizer 770.Activation Energy 771.Styrofoam Burning Danger 772.Sulfur Chemistry 773.Chemical Bonds and Noise 774.Strongest Bonds 775.pH of 7 776.Chemists 777.Gasoline Additives 778.Cohesion, Adhesion and Gravity 779.Vinegar and Titration 780.Carbonation 781.Freon Gas and Food 782.Sigma and Pi Bonds 783.Metals in Liquid Nitrogen 784.Hydration 785.Aluminum Causing Reaction 786.Where do Chemicals Come From? 787.Half Water in a Reaction 788.Thermometer Types 789.Polar Molecules 790.Noble Radii 791.Ice in Liquid Nitrogen 792.Reactions and Quantities 793.Oxygen Behavior 794.Water is Special 795.Cleaning Mercury 796.Water Bonds 797.Chemical Names 798.Naphthalene and Petroleum Ether 799.Ionization 800.Reactions and Quantities 801.Proton Attraction 802.Octet Rule 803.Acid Evaluation 804.Mercury Poisoning 805.Carbon Standard 5

806.Styrofoam and Acetic Acid 807.Reducing Agents 808.Iodine Crystals 809.Nitrogen Gas 810.Water Mass 811.MSDS Request 812.Hydrogen Holders 813.Evaporation Speed 814.Noble Elements 815.VSEPRT 816.Gas Demo 817.Matches 818.Leaded Fuels 819.Water Expansion 820.Alcohol Differences 821.Rust 822.Speed of Evaporation 823.Normality 824.Carbon Dioxide Listing 825.Gas to Solid 826.Oxidation Numbers 827.CO2 Inorganic 828.Burning Gains Mass 829.Triple Point 830.IU Defined 831.Rate of Reaction 832.Melting Ice 833.Dissolving 834.Boiling Point 835.Solid Acids 836.Thixotropic Mixtures 837.Sodium Thiosulphate 838.Carbon Dioxide Formula 839.Water and Freezing 840.Orbitals 841.Flourine Explosions 842.Carbonation Release 843.Rubidium Reactions 844.Fading Colors 845.Mole Day 846.Potassium Hydroxide Safety 847.Melanin Model 848.Water without Electrolysis 849.Salt Separation 850.Gum Sticking 851.Combustion Rate 852.Metal Expansion 853.BulletProof Glass Composition 854.Chemistry Worker 855.Electronegativity 856.Radio Waves and Chemists 857.Detecting Atom Splits 858.Hydration of Sugar 859.Nail Polish 860.Neon Light Construction 861.Salt Melting Points 862.Water Filtration Chemicals 863.Arrhenius and a Bronsted-Lowry Acid 864.Coplanar PCB C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

865.Creating Water 866.Dangerous Salt Separation 867.Ferrous and Ferric 868.Flame Test 869.Boric Acid and Silicone Oil 870.Holes, Cans and Pouring Liquids 871.Flourine and Chlorine Safety 872.Water Vapor Saturation 873.Polymerization 874.Mercury Poisoning 875.Radical Oxygen 876.Silly Putty 877.Saturated Water 878.Testing for Chlorine 879.Rate of Evaporation 880.Gasoline Storage 881.Transition Elements and Oxidation 882.Salt and Carbonation 883.WD-40 884.H2O2 Decomposition 885.Fluorescence 886.Acetone 887.Electric Chemistry 888.Stains and Temperature 889.Chemical Color Change 890.HgCl4 Toxicity 891.Electrons in a Flame 892.Finger Nail Chemistry 893.Weak Acids and Water 894.Ice Packs 895.Collision Theory 896.Modern Calorie Definition 897.Dissolving Epoxy 898.Electric Chemistry 899.Melting of Ice 900.High Altitude Candle Burning 901.Water Vapor Saturation 902.Electron Behavior in Flame 903.Ice Pack Composition 904.Electricity and Crystal Growth 905.Electron Cloud Theory 906.Some Properties of Copper Sulfate 907.Coloring Brass and Copper 908.Chemiluminescence Chemistry 909.Making Metal Rust Resistance 910.Vinegar Concentration 911.Color of the Elements 912.Color Fading 913.Failed Underwater Fireworks 914.Failed Thermo Experiment 915.pH Buffers 916.Drain, Aluminum and Water 917.Changing Penny Colors 918.Alloy 919.Cleaning Pennies with Vinegar 920.Diamonds and Burning 921.Motor Oil and Dioxins 922.Cobalt Chloride Uses 923.Failed Underwater Fireworks 4822747.doc

924.Error Analysis with a Calorimeter 925.Rust Proof 926.Chlorine in Water 927.Solubility of Strontium Carbonate 928.Soft Drinks and Decomposition 929.Perms and Hair Damage 930.Temperature and Flame 931.Molecule Sizes 932.Air Pressure and Can Crushing 933.Molecules Representation 934.Orange Juice and Toothpaste 935.Colors and Absorbancy 936.Plasma State Change 937.Radon Gas Analysis 938.Corrosion 939.Isoelectric Point of Arginine 940.Batteries Differences 941.Distilled vs Deionized Water 942.Radon Gas Procedures 943.Hydrogen Embitterment 944.Alpha Particle Force 945.Dyes and Absorbtion 946.Flash Paper Magic 947.Stain Removal 948.Ammonium Ion Structure 949.Turning Copper Green 950.Color and Luminol 951.Vapor Pressure 952.UV Protection Materials 953.Disappearing Ink 954.Na2SCO2 955.Melting Ice and Water Quality 956.Crystals and Life Savers 957.Fluids and Density 958.Metals and Incandescence 959.Simple Chemistry Experiment 960.Electronegativity 961.Helium and Nitrogen Sizes 962.Toxins and Hot Plastics 963.Density in Fluids 964.Testing for Flourine 965.Dihydroxyacetone 966.Chemical Suffixes 967.Portable LOX 968.Refridgerants 969.Heating Plastics 970.Irregularities in the Periodic Table 971.Rust and H2O2 972.Mixing Oil and Water 973.Metallic Hydrogen 974.Partial Pressure 975.Shellac Safety 976.Metal Corrison 977.Oxygen Advantages and Disadvantages 978.Alkenes and Alkynes Comments 979.Silica Vaporization 980.Hardness Clarification 981.Nuclear Density 982.Water Quality 6

983.Surface Tension and Evaporation 984.Gold Reactions 985.Removing Sulfur from Well Water 986.Bubbles and Surface Tension 987.Flame Colors 988.Flourine Gas on Rubidium or Cesium 989.Ski Wax 990.Impurities and Crystals 991.Boron and Melting Points 992.Iodine Clock 993.Sodium Thiosulphate in Hair Products 994.O2 and CO2 Reactions 995.PMMA 996.Water and Oil Mix 997.Phenol and Naphthol Solubility 998.Liquid Density Demonstrations 999.Spectral Analysis 1000.Solid CO2 and Energy 1001.Moth Ball Sublimation 1002.Solubility and Solids 1003.Hair and Sodium Thiosulfate 1004.Strontium Chloride 1005.Heating Silicone Oil 1006.Burning Candle 1007.Benzene 1008.Magnesium and Vinegar 1009.Caffeine Analysis 1010.Camphor and Rust 1011.Organic Nomenclature 1012.Silver Nitrate Remover 1013.Styrofoam Composition 1014.Styrofoam and Marshmallows 1015.Ionic Bonds in Water 1016.Freezing Water at 100 degrees C 1017.High Melting Points 1018.Oxygenated Gasoline 1019.Burning Candle Sequel 1020.CO2 States 1021.Baking Soda and Vinegar 1022.Removing Flourine from Water 1023.Frozen Carbon Dioxide 1024.CO2 Volume 1025.Electrolysis Demonstration 1026.Cleaning Coins 1027.Shape of Ammonia 1028.Freezing Alcohol and Water 1029.Alcohol Buring and Heat 1030.Compressed Gas and Gauges 1031.Ice Cream Soda Fizz 1032.Aspirin Aging 1033.Carbon Bonds 1034.Calcium Chloride and Potassium Carbonate

1035.Metals and Covalent Bonds 1036.Nitration 1037.Hydrogen and Helium Weight 1038.Carbon Fiber 1039.Breathing Flourine 1040.Fluorescence and Raman Scatter 1041.Activation Energy Problem C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1042.Reducing Benzene 1043.Oxygen and Combustion 1044.Polar Molecules 1045.Ozone and Pressure 1046.Cyanoacrylate Ester and Cotton 1047.Conductivity 1048.Flourine Breathe 1049.Saturated Salt Water 1050.Skin pH and Water 1051.Fading Colors 1052.Baking Powder Freshness 1053.Benzene Ring 1054.Electron Affinity 1055.Quickly Rusting Steel 1056.Super-Cooled Water 1057.Bromine and the Periodic Table 1058.Dry Ice 1059.Predicition Coordination Numbers 1060.Picric Acid 1061.C-C Bonds 1062.Iron, Steel and Magnetism 1063.Rusting Faster 1064.Growing Sulfur Crystals 1065.Octane Rating 1066.Size of Hydrogen Ions 1067.Coal to Diamonds 1068.Acids and Octane 1069.Superglue and its Tube 1070.Acid Strength 1071.Radon and Disease Treatment 1072.Ice Packs 1073.Copper Oxides and Toxicity 1074.Kelp and Products 1075.Phosphate Precipitation 1076.Pressures 1077.Causes of Chemical Reactions 1078.Gasoline and Diesel 1079.Salt Water and Melting Ice 1080.Electron Spin 1081.Ion Conductivity in Fluids 1082.Meat Loaf and Aluminum Foil 1083.Paradichlorobenzene Properties 1084.Products and Reactants 1085.Milk Plastic 1086.Calcium Chloride and Potassium Carbonate

1087.Evaporation and Crystals 1088.Color Change Demonstration 1089.Puzzle? 1090.Colloids at a Distance 1091.Penny Composition 1092.Acetic Anhydride 1093.Fluoride and Cooling 1094.Candle Burning Revisited 1095.Tetrahedral 1096.Temperature and Phase Change 1097.Freezing Enclosed Water 1098.Desalinization 1099.Subatomic Particles and Elements 1100.Water and Density 4822747.doc

1101.Real Application of Mole 1102.Extracting HCN from Seeds 1103.Cream, Vinegar and Plastic 1104.Lye and Rubber 1105.Sodium Thiosulfate and Dioxin 1106.Baking Soda and Odors 1107.Potassium and Surface Tension 1108.Plexiglass and Potassium Coatings 1109.Do Not Mix 1110.Cyanoacrylates 1111.Element 111 1112.Phase Change and Temperature 1113.CO + O3 > CO2 + O2 1114.Radiation and PVC 1115.Chemistry Question 1116.Bleach and Color Safe 1117.Solubility of Plastics 1118.Particle Accelerator Radiation 1119.Epoxy Cure Time 1120.Sublimation 1121.Ionic Bond and Current 1122.Carbonation Pressure 1123.R.O. and Deionized Water 1124.Cationic Charge 1125.Phenolphthalein and Vapors 1126.Photochemical Smog 1127.Lithium and CO2 1128.Lithium and CO2Process to Remove and Replace Color

1129.CuSO4 and Acid 1130.Matches and Phosphorous 1131.Phenolphthalein and Vapors 1132.Super Ozone O8 1133.Lye and Rubber 1134.Cryogenics and Rates of Reaction 1135.Mercury Disposal 1136.Silver as a Conductor 1137.CH3COONa 1138.Dipole Molecules 1139.Ceramic Filters 1140.Chlorine Dioxide 1141.Garbage Combustibility 1142.Evaporating Ether 1143.Scale Remover 1144.Oxygen Enriched Burning 1145.Plastics Made Simple 1146.Chlorates 1147.Firearms Preservation 1148.AMU 1149.Triple Point and Kinetic Energy 1150.Gold; Elementary 1151.Hazards of Lithium Batteries 1152.Conc vs Dilute HCl 1153.Citric Acid Concentration 1154.Evaporating Ether 1155.Kaolin Separation 1156.Ammonia and Bleach 1157.Silver Stains 1158.How to Tell When Salt Dissolves 1159.Cake Changing 7

1160.Immisciable Liquids 1161.Speeding up Boiling 1162.Chemical Symbols 1163.Buffer Capacity and Concentration 1164.Buffering Soap 1165.Current Instrument Use 1166.Tungsten Characteristics 1167.Terry Cloth Degredation 1168.High Density, Low Viscosity 1169.Bleach in Pools 1170.Size of Hydrogen 1171.Ammonia and Bleach 1172.Garbage Combustibility 1173.Hydrogen Production 1174.Tarnished Pennies 1175.Determining Hard Sphere Radius 1176.Buffering Soap 1177.Carbonation and Acidity 1178.CuSO4 and Acid 1179.Water Crystals in Thawing Soda Pop 1180.Tarnished Pennies 1181.Hydrogen Burning Products 1182.Helium 2 1183.Silver Plating 1184.Oxidation and Acetate 1185.Ferrous/Non-Ferrous Metals 1186.Double Decomposition 1187.Fluorine, Zinc Sulfate 1188.Industrial Redox of Rust 1189.Triple Point and Kinetic Energy 1190.Chlorine Dioxide 1191.Optical Isomers 1192.Antibacterial Lotion Product 1193.Oil Separation Prevention 1194.Prefixes 1195.Nitrogen or Oxygen 1196.Sodium in Water 1197.Reducing Gasoline Hazard 1198.Absorption vs Emission 1199.Names of Elements 109-112 1200.Sulfate Test for Steel Carbon 1201.Cyanide and Boiling Water 1202.Decaffienate Coffee 1203.Mothballs and Gasoline 1204.Salt Water, Q, C, dT 1205.Fire from Air 1206.H2O2 Degradation 1207.Bicarb, Vinegar, and Lentils 1208.Carbon Dioxide and Solubility 1209.Tire Fluid 1210.Salt Water Steam 1211.Purity for Food 1212.HCl and Water 1213.Dissolving Paint Chips 1214.Coal and Mercury 1215.BTEX 1216.Cyanide and Boiling Water 1217.Effects Changing Auto Fuel 1218.Calculating Isoelectric Point C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1219.Carmelization of Sugar 1220.Electron Spin, Magnetism, Revolution 1221.Stirring Custard Powder 1222.Food Grade CO2 1223.8 Phases of Water 1224.Exploding Glass 1225.Manufacturing Heavy Water 1226.Polycarbonates 1227.Molybdenum Contamination 1228.Stained Wood (oops) 1229.Hazardous Materials Awareness 1230.Luminol Recipe 1231.PVC and HCl 1232.Magic and Chemicals 1233.Hydrinos 1234.Expansion Upon Freezing 1235.Glassy Carbon 1236.Tri Nitrogen Iodide 1237.Making Aluminum Powder 1238.Liquid Fluorescent 1239.Superabsorbent Polymers 1240.Hair Spray Removal 1241.Cobalt Chloride Gels 1242.Calcium in Milk Experiment 1243.Water Crystals 1244.Column for HPLC 1245.Dessicator Operation 1246.Pure Water Behavior 1247.CO2 Handling 1248.Benzene and Arsenic 1249.Iron Oxide Purity 1250.Burning Styrofoam 1251.f-Orbitals 1252.Explosive Conditions 1253.CFC Depletion 1254.Iodine Water Treatment 1255.Baking Soda and Vinegar Safety 1256.Risk of Stibine Gas 1257.Glass and UV Penetration 1258.HFC-134 1259.Hygroscopic Material 1260.Mono and Dibasic Acid 1261.Freezing Water 1262.Preventing Flat Soda 1263.What is an AMU Revisited! 1264.Cola and Hard Foam? 1265.Soap Ingredients 1266.Removing Coffee Stains 1267.Neutrons and Isotopes 1268.Flame Test Safety 1269.Polycarbonate and Light 1270.Air in a Solid Techniques 1271.Bluing 1272.10% Solution 1273.Salt and Melting Snow 1274.Fire and Water 1275.steam 1276.Half Reactions in Lemon 1277.What are Crystals? 4822747.doc

1278.Decomposition of Plastic 1279.Metallic Corrosion 1280.4s and 3d Orbitals 1281.Daniel Cell 1282.Wine to Vinegar 1283.Gas Extraction 1284.Precipitates 1285.Hydrogen and Oxygen Ratio 1286.Ground Water Fluoride 1287.Gas Extraction 1288.Plastic Characteristics Reference 1289.Suds 1290.Electron Transitions 1291.Precipitate Colors 1292.UV Water Treatment 1293.Freezing Salt Water 1294.Aluminum Flame Test 1295.Art Restoration 1296.Drops in ml 1297.Magnets and Hard Water 1298.Removing Sulfur 1299.Paper Color Change 1300.Cheap CO2 1301.Grease and Denim 1302.Pizza Bread 1303.Carbon Dioxide and Solubility 1304.Gelled Alcohol 1305.Teaching Shells 1306.Quasi Crystalline Disposition 1307.Electron Transitions 1308.Plexiglass and Alcohol 1309.Burnt Oil 1310.Frontiers of Chemistry 1311.Baking Soda, and Salt 1312.Bleach Decomposition 1313.Vinegar and Pearls 1314.Vinegar, Baking Soda, and Salt 1315.Nonmiscable Fluids 1316.Alcohol in Thermometers 1317.Gold Test 1318.Immiscible Liquids 1319.Sun-Resistant Coating 1320.Isomers 1321.Desiccants 1322.Manganese Corrosion 1323.Dichromate Colors 1324.Eggs and Copper 1325.TOC and pH 1326.Coffee Maker and Metal Plating 1327.Laser Splitting Water 1328.Pork and Aluminum 1329.Quadruple Chemical Bonds 1330.Smelling Salts 1331.Golden Pennies 1332.Magnesium Flame Test 1333.Bleach and Fiberglass 1334.Ice Hardness 1335.Ferric vs Ferrous 1336.Electrolosis Experiment? 8

1337.Avogadro's Theory 1338.Finding Calcium Content 1339.Lemon Reduction 1340.Atomic Radii 1341.Yeast as a Catalyst 1342.Motion and Crystals 1343.Antibacterial and Rust 1344.Flash Fire and Flame Test 1345.Lemon Reduction 1346.Ink and Paper 1347.Bonding in Alpha Naphthol 1348.Synthetic Oils 1349.Paraffin and Polution 1350.Painite 1351.Bleach and Chlorine Gas 1352.Covalent Bond Types 1353.Vacuum Distillation 1354.Superheated Water 1355.Magnesium Sulfate in Landfill 1356.Burning Diamonds 1357.Moles 1358.Boiling Chips 1359.Isotope Evaluation 1360.Metals and Flame Tests 1361.Petroleum Jelly Formula 1362.Sulfur in Water 1363.Naphthalene and Thymol 1364.Measuring Atomic Radii 1365.Potassium in Fertilizer 1366.CO in LPG and Natural Gas 1367.Massing Helium 1368.Metallic Specific Heats 1369.Paraffin and Polution 1370.Plexiglas Decay 1371.Peroxide Oxidation 1372.H2O vs OH2 1373.Tarnishing Copper 1374.Exothermic/Endothermic Labs 1375.Hydrogen's Size 1376.Polarity Determination 1377.Starch Packing Peanuts Waste 1378.Gasoline Combustion 1379.Positive Activiation Energy 1380.Polarity 1381.Buckey Ball Importance 1382.Museum Gel 1383.Heating Plastics 1384.Hydrated vs Hygroscopic Crystal 1385.Water and Solubility 1386.Fingerprint Chemistry 1387.Carbolic Acid Dewpoint 1388.Alkali vs Acid 1389.Zinc Testing 1390.CO2 Measurment 1391.Bleach and Calcium Chloride 1392.Exploding Glass 1393.Bleaching Lumber 1394.Salt Separation by Freezing 1395.K and Na Flame Test C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1396.pH Range 1397.Electron Shells 1398.Solvent Nature of Water 1399.Safety of Naphthalene Lab 1400.Changing Ice Crystals 1401.Invisible Writing 1402.CO2 Detection 1403.Hydrated vs Hygroscopic Crystal 1404.Buckey Ball Importance 1405.Wax Removal 1406.Wide Spectrum Absorbing Paint 1407.Copper Waste 1408.Identifying New Elements 1409.Packing Peanuts 1410.AlCl3 Reactions 1411.Sulfuric Acid Disposal 1412.Mg Flame Test 1413.pH and Evaporation Rates 1414.Vinegar Strength? 1415.Magnets and Hard Water Revisited 1416.Distilled Water Residuals? 1417.Compounds and Mixtures 1418.Freezing Point Depression and Vapor Pressure Lowering

1419.Salt Volatized Table 1420.Strength of Covalent Bond vs Ionic Bond

1421.Iodized Salt Production 1422.Testing Soap pH 1423.Droplet Size for Vapor 1424.Ionic and Covalent Properties 1425.Polarity of Ozone 1426.Molecule Comparison 1427.Acid Spills 1428.Salt, Water, and Corrosion 1429.Crystals and Mixtures 1430.Corrosion Scale 1431.Proton - Electron Distance 1432.pH Before Conductivity 1433.22.4L 1434.Money Corrosion 1435.Vapor Pressure and Altitude 1436.How Does Evaporation Work? 1437.Separating Salt and Sugar 1438.Number of Isotopes 1439.Atomic Dating, U238, K 1440.Distilled Water Residuals? 1441.Covalent Carbon 1442.Egg and H2SO4 1443.Phase Change and Material 1444.Platinum and Methanol 1445.Sorbent After Cleanup 1446.Vacuum Boil 1447.Pink Reaction 1448.Measuring Calcium Content 1449.Metallic Argon 1450.Plastic Bottle Combustion 1451.Failed Chemistry Projects 1452.Sr or K in Aliphatic Hydrocarbons 1453.Deionized Water, Aggressive? 4822747.doc

1454.NaCl and Heat 1455.Graham's Law 1456.Reaction Time vs Acid Molarity 1457.Paradichlorobenzene 1458.Flame Test, No Bunsen 1459.Cool Flames 1460.Desalinization Processes 1461.Deuterium Oxide Boiling Point 1462.Monoammonium Phosphate Crystals 1463.Periodic Table "n" 1464.Sulphur in Water 1465.Glow In the Dark 1466.Gasoline and Styrofoam 1467.Benzene in Consumer Products 1468.C14 and Thermal Energy 1469.s, p, d, f, g, h Suborbitals 1470.Gibb's Free Energy 1471.Arsenic Test 1472.Nonpolar Solubility 1473.Seeding Cobalt Chloride 1474.Titration Endpoint Determination 1475.Mass Spectroscopy of . . . 1476.Electron Potential Energy 1477.Artificial Sweetener 1478.Recycling Iodine 1479.pH Probe Calibration 1480.Noble Gas Origin 1481.Diamonds and Corrosion 1482.Acid Free Paper 1483.Bonding and Melting Point 1484.Alginate Impression and pH 1485.Ship Rust and Location 1486.Sodium Acetate, Salt; Sugar ID 1487.Anti-Fogging Agents 1488.Trace Gasses 1489.Copper Sulfate 1490.Molar Volume, Standard Conditions 1491.Experiments for 4th Grade; Gold Rush 1492.Gas to Ripen Fruit 1493.Environment and Lawn Chemicals 1494.Bleach and Ammonia 1495.Plaster of Paris 1496.Beryliumfluoride 1497.Main Part of Perfume 1498.Potassium and Sodium Densities 1499.Silicone Oil Removal from Plastic 1500.Soda, Fizz, and Finger 1501.Dry Ice and Heat of Sublimation 1502.Creosote Disposal 1503.Evaporation of Fresh vs Salt Water 1504.Sulfites and Oxidation 1505.Water from Burning Gasoline 1506.Heaviest Atom 1507.Sulphur and Aluminum 1508.Green Copper 1509.Fading Paper 1510.Joined Group Nomanclature 1511.Super-Saturation 1512.Cleanser and Detergent 9

1513.Water and Stain Removal 1514.Energy Notation 1515.Qualifying Caffeine 1516.Bond Energy and Stability 1517.Hot Styrofoam 1518.Bonding and Melting Point 1519.Smell of Chlorine 1520.Iodine, Cornstarch, Baking Soda 1521.Plane De-Icer and the Environment 1522.Leonard Jones Potential 1523.Compoud Information for Elem. Sch 1524.Altitude and Heating Water 1525.Organic Material and Fire 1526.Compressed Water and Fish 1527.Gas Collisions per Second 1528.pH and Temperature 1529.Titrateable Acid Standard 1530.Water and Carbon Dioxide States 1531.Adding Liquids, Conservation of Volume 1532.Aquaferdes and Wood Treatment 1533.Thermoplastic, Thermosetting, Recycling 1534.Iodine Solution 1535.Iodine, Water, and Lettuce 1536.Cake Baking 1537.Acetone and the Environment 1538.Fruit Salad in Silver Bowl 1539.Well Water, Bleach, and Laundry 1540.Sodium, Water, and Ion Solutions 1541.Treated Water Quality 1542.Alloys and Bleach 1543.Plexiglas Adhesive 1544.Ethnoic Acid 1545.Viscosity and Density 1546.Copper/Brass Corrosion 1547.Blowing Out Candles 1548.Acid and Basic Cleaners 1549.Aluminum Combustion 1550.NiMAH Cells 1551.Sodium Aluminum Alloy 1552.Carmelizing Sugar 1553.Water Absorbing Powder 1554.Colored Air Aerosol 1555.Chemicals Like Water 1556.Hydrogen Peroxide and Polarity 1557.Bleach and Marble 1558.Altitude and Heating Water 1559.Mercury Light and Spectrum 1560.Copper Resonance 1561.Edges of Crystals 1562.Bleach: Chlorine vs. Non-Chlorine 1563.Chlorine Bleach in Swimming Pools 1564.Burned PVC 1565.Ripples in Alcohol and Water 1566.Hydrogen in Carbon Bonds 1567.Esterification or Estrification? 1568.Calcium-Lithium Bond 1569.Metal Plating 1570.Finding Solubility 1571.Styrofoam Decay and Water Supply C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1572.Water and Alcohol Molecular Size 1573.pH Measurement of Bleach 1574.Silver Lining Demo 1575.Flammable Orange Peel 1576.Reversing and Repeating Procedure 1577.Tarnishing Silver 1578.Soluble Salts and Nitrates 1579.Lead in Soil Test 1580.Aquaferdes and Wood Treatment 1581.Thermoplastic, Thermosetting, Recycling

1582.Copper Sulfate Crystals 1583.s, p, d, f Naming 1584.Bumper Sticker Glue Removal 1585.Reducing Sodium in Treated Water 1586.Wet Chemistry 1587.Methane to Propane 1588.Half Life to Stability Quandry 1589.Mood Rings 1590.Sulfur Whiff from Faucet 1591.Candle Burning and Flame 1592.Lead in Paint 1593.Oil Extraction of Avocados 1594.Electron Cloud 1595.Fat Free Milk and Fat Size 1596.Disposing Ammonium Nitrate 1597.Soap Making 1598.Iodine and Vitamin C 1599.High School Chemistry Kits 1600.Aluminum Iodide 1601.PABA 1602.Fluorine, Iodine, and Bond Energy 1603.Inverse Sublimation 1604.Electron Pairs and Molecular Shape 1605.Salt and Fresh Water Specific Heat 1606.Molecular Size and Solubility 1607.Vinegar and Tums 1608.Copper Sulfate and Stainless Steel 1609.Hoffman Apparatus 1610.Processing Dolomitic Lime 1611.Zinc and Copper Test in Hair 1612.Boiling Water on Ice 1613.Alkynes and Alkenes 1614.Detergent and Oil Spills 1615.Vapors, Bubbles, Dry Ice 1616.Home Distilling 1617.isopropanol and isopropyl alcohol 1618.Blood Indicator 1619.Barrier Dissolving Demonstration 1620.Strontium Chloride Toothpaste 1621.Grain and Dust Explosions 1622.Ions and Rusting Process 1623.Dodecahydrates 1624.Alcohol 1625.Alcohol versus Methanol 1626.Iron in Cheerios 1627.Liquid Density Demonstration 1628.Penny Precipitated 1629.Filled Electron Shell 1630.Cleaving Covalent Solids 4822747.doc

1631.4s and 3d Electons 1632.Atomic Number and Volume 1633.Metal Reactivity 1634.Purity of Iron Wool Determination 1635.Dissolving Acetone and Temperature 1636.Phenols in Water 1637.Coffee, Cream and Changes 1638.Temperature and pH Measurement 1639.Selecting Catalysts 1640.Burning Plastics 1641.Sugar Candy Formation 1642.Freezing Point of 40% Isopropyl 1643.Bases and Wool 1644.Photoreactive Nontoxic Chemical 1645.Chemicals in Smoke 1646.Burning Sugar 1647.Dissociation and Ionization 1648.Freezing of Water 1649.Tile Glaze and HCl 1650.Endo, Exothermic Reactions and Energy 1651.CO and CH4 Boiling Points 1652.Measuring Freezing/Melting Points 1653.Boiling Points of Gasses 1654.Gas versus Fluid Compression 1655.Chemical Composition of Crude 1656.Burning Blue 1657.Blue Steel 1658.Carbon and Silicon Dioxide 1659.Heating Metals and Color 1660.Potassium Chloride Hygroscopic 1661.Starch and Baby Powder 1662.Laminating Leaves 1663.Fluorine, Iodine, and Bond Energy 1664.IR and Reactions 1665.Reaching Absolute Zero 1666.Chemical Reactions in Cooking 1667.Solubility of Solids and Gasses 1668.Toothpaste and Plants 1669.Working with Dry Ice 1670.pH Calculation for Soil 1671.pH of Gasoline 1672.Solubility of Propoxyphene 1673.Electron Affinity and Energy 1674.Orange Peels and Styrofoam 1675.Water, Alcohol, and Volume 1676.Polystyrene 1677.Plastic Bottles and Water 1678.Flame Test and Ions 1679.Salt Water and Metals 1680.Measuring Fusion Temperatures 1681.Particles in Sand Grain 1682.Evaporation Factors 1683.Calculating CO2 1684.Carbon Dioxide Production 1685.Saturated Solution and Liquids 1686.Hybridization of Atoms 1687.Dry Ice and Water 1688.Combustion Oxygen Threshhold 1689.Endo, Exothermic Reactions and Energy 10

1690.Electron Affinity and Energy 1691.Viscosity Mixture Formula 1692.Restricted Energy Transitions 1693.Salt and Metals 1694.Dissolving Rates 1695.Pigments in Plants 1696.Lime and Potash 1697.Methyl Benzoate and Solubility 1698.Burning O3 Instead of O2 1699.Measuring Hard Water 1700.Amount of Indicator for Titration 1701.Mint and Fresh Breath 1702.Density of Gas and STP 1703.Density of Ice at Different Temperatures 1704.Ammonia and Flower Pigment 1705.Decomposition Always Endothermic 1706.Copper Sulfate Stain Removal 1707.Energy Transfers at Melting Point 1708.Solubility Factors 1709.Carbonation Influences 1710.1s Orbital 1711.Boiling Point Elevation 1712.Determining Flammability 1713.Algae and Water Evaporation 1714.Corroding Pickled Steel 1715.Vitamin C and Open Orange Juice 1716.Strength of Acids 1717.Salt, Crystals, and Bluing 1718.Visible Gasses 1719.Cobalt Chloride 1720.Rubber Protectant 1721.Chlorine and Brake Fluid 1722.Impurities and Boiling Point Depression 1723.Alcohol Flame Temperature 1724.Flame Test Safety 1725.Fossil Preservation 1726.Hydrogen and Antimatter 1727.Osmosis and Potato 1728.Potassium Hydroxide and Soap 1729.Recycling HDPE (#2) 1730.Temperature and Absorbancy 1731.Test for Iron in Juice 1732.Toothpaste, Ash and Tarnish 1733.Orbital Hybridization 1734.Viscosity and Evaporation 1735.Boiling Water in Reduced Pressure 1736.Aluminum and Bromine 1737.Capitalizing Elemental Names 1738.Electrolyte pH and Fruit Battery 1739.Food Dye Potency 1740.Iodine and Vitamin C Test 1741.Metal Tarnish Formation 1742.Oil Evaporation 1743.Salt, Sun and Car Paint 1744.Shining Crystals 1745.Art Restoration and Chemicals 1746.Phenolphthalein in Silica Gel 1747.Sodium Polyacrylate Mimic 1748.Hartshon C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1749.Cerous Ammonium Nitrate CAS 1750.Glycerine and Soap 1751.Dye Indicators 1752.Spontaneous Combustion Heat 1753.Miscibility and Immiscibility of Liquids

1754.Evaporation and Saturation 1755.Pure Water Concentration 1756.Cooking in Baking Soda and Vinegar 1757.Boiling and Evaporation 1758.Different Expansion Rates 1759.Soap and Boric Acid 1760.Chlorine in Salt Flame Test 1761.Crystal Dissolving Rates 1762.Melting Plastic 1763.Rust Formation 1764.Lung Pressure and Vapors 1765.Atomic Radii of Isotopes 1766.Titanium and Uranium Comparison 1767.Foam and Carbonated Drinks 1768.Manganese Nitride 1769.Calcium Carbonate vs Aluminum Hydroxide

1770.Pure Water Concentration 1771.Boiling and Evaporation 1772.Liquid Carbon Dioxide 1773.Abandoned Mine Battery 1774.Saponification 1775.Changing Surface Tension 1776.Moisture and Potassium Hydrogen Sulfate

1777.Soap and Polution 1778.Determining Water in Fruit 1779.Glacial Nomenclature 1780.HPO4 Valence 1781.Sugar Dissolving Rates 1782.Calcium Chloride and Water 1783.Bubbles, Salt, and Water 1784.Resonance and Bonding 1785.Shellac Safety 1786.Chlorine, Water, and Bleach 1787.Liquid Carbon Dioxide 1788.Test For Copper in Water 1789.Calcium Content in Milk 1790.Natural pH Dyes 1791.Desiccator Function 1792.Smoldering vs Free Burning 1793.Endothermic Energy Flow 1794.Heat of Fusion Demonstration 1795.Dihydroxyacetone and Dandelions 1796.Salt, Sidewalks, and Ice Cream 1797.Vaporization Forces 1798.Mixing With Chlorine Dioxide 1799.Burning HDPE 1800.Crepe Myrtle Stain Removal 1801.Negative Activiation Energy 1802.Humus Test With H2O2 1803.Removing Copper Clad 1804.Rusting Steel Wool 1805.Salt Mixture Turning Green 4822747.doc

1806.Coal for Filtering Water 1807.Liquid Mixtures 1808.Jewelery and Chlorine 1809.Bonded and Nonbonded Atoms 1810.Glycerol and Chlorides 1811.Distilled Water and Carbon Filter 1812.Origin of Octet Rule 1813.Compounds and Radioactive Isotopes 1814.Nail Polish Bubbles 1815.Vitamin C and Starch Indicator 1816.Sodium Borohydride Solution 1817.Solubility Tables 1818.Filled Buckyballs 1819.Tire Recycling 1820.Materials That Change Water Expansion 1821.What is Nanotechnology? 1822.Candles and Odor Elimination 1823.Spontaneous Combustion and Finishes 1824.Gold, Silver, Alloy, and Composition \ 1825.Hard Water and Magnetism 1826.Sulfite Nomenclature 1827.Homogeneous and Heterogeneous Mixtures

1828.Atomic Structure 1829.Mercury Bonds 1830.Bond Angles 1831.Smelling Salt Fabrication 1832.Purifying Salt Water 1833.Soda Pop in Freezer 1834.Iodine Crystal Formation 1835.Oxide, Hydroxide Trend on Table 1836.Electron Shells and Bohr Model 1837.Cold Packs at Room Temperature 1838.Fundamental Chemical Bond 1839.Odor Making Oil Removal 1840.Smoke: Solid or Gas 1841.Silicate Test 1842.Water in Popcorn Measurement 1843.Limit to Elements 1844.Kettle Cleaner 1845.Dissociation and Ionization 1846.Copper Cleaning and Preserving 1847.Time Release Capsule Operation 1848.Perchloroethylene and Oil 1849.Aluminum, Copper Chloride, and Sulfate 1850.Inert Gas Compounds 1851.Carbon and Numerous Materials 1852.Liquid Plastic 1853.Plasma to Solid Change 1854.Pressure and Volume 1855.Octet Rule and Electron Shells 1856.Crystal Formation Conditions 1857.Pressure and Volume 1858.Gasses Not Detectable in Mass Spec 1859.Electronegativity and Bonding 1860.Methane Hydrates 1861.Crystals and Methane Detection 1862.Milk and Teeth 1863.Viscosity and Phase Change 1864.Black Water Under Pressure 11

1865.Noble Gas Electronegativity 1866.Molecules in Cup of Water 1867.Glow Sticks 1868.Hot Water Cleaning Oil 1869.Amorphous Carbon 1870.Carbon and Numerous Materials 1871.Methods for Measuring Rate of Reaction 1872.Double vs Single Bond Stability 1873.Salt for Melting Ice 1874.Heat of Fusion 1875.Triethylene Glycol 1876.Viscosity and Boiling Point 1877.Nitroglycerine: Amine or Amide 1878.Manufacturing Dry Ice 1879.Test Determining Rust 1880.Crystal Growth Beside Cooling Rate 1881.Shaking Soda Cans 1882.pH and Temperature 1883.Radioactive Technetium 1884.Exploding Soil Gas 1885.Glass: Solution or Mixture 1886.Measuring Dissolved CO2 1887.Flammability 1888.Measuring Iron Content of Food 1889.Immiscible Becoming Miscible 1890.Mothball and Fire 1891.Diamond to Coal 1892.Acids and Bases and Reactions 1893.Chlorine, pH, and Gas From Pools 1894.Metallic Bond Strength 1895.Measuring Electrolytes 1896.Molecules on Pencil Tip 1897.Vitamin C Oxidation 1898.Multiple Uses of Dairy Cream 1899.Bleach and Surface Tension 1900.Solid and Liquid Acids 1901.Rusty Water Cure 1902.Diamond to Coal 1903.Atmospheric Oxygen Source 1904.Gunpowder Combustion Gas 1905.Toothpaste as a Cleaner 1906.Living With Only Covalent or Ionic Bonds 1907.Container for Growing Crystals 1908.Copper Pipe Corrosion 1909.Valence Shells and Clouds 1910.Paints, Salts, and Results 1911.Lizards, Chemical vs. Physical Change 1912.Balmer Series in Heavy Hydrogen 1913.Reaction Rate and Polar/Non-Polar 1914.Mass, Volume, Alcohol, Water 1915.Change of Phase and Equilibrium 1916.Gas Laws and Inert Gases 1917.Thermal Depolymerization 1918.Undiscovered Elements 1919.Acids and Bases and Reactions 1920.Copper Sulfide Crystals 1921.Tarnish Prevention 1922.Thermodynamics and Pressure 1923.Solubility and Properties of Matter C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

1924.Cesium Fluoride Melting Point 1925.Evaporating Hydrate Crystals 1926.Electroplating Silver on Gold 1927.Valence Shells and Clouds 1928.Carbon 14, 12, and Diamonds 1929.Hydrogen and Oxygen Combination 1930.Boron and Hydrogen 1931.Fabric Softener and Cotton 1932.Measuring Fermentation 1933.pH 5 to pH 2 as Percent Change 1934.Naming NaHCO3 1935.Bleach and Aluminum Foil 1936.C-O Bond in Combustion 1937.Chlorine Removal 1938.Electronegativity and Electron Affinity

1939.Bluing and Salt Crystal Growth 1940.Water Expansion Term 1941.Identifying Salts 1942.Reactivity of Weak, Strong, Dilute Acids

1943.Radon Electron Configuration 1944.Electrolysis and Catalysts 1945.Pure Substances and Freezing Rates 1946.Attraction and Repulsion of Polar Molecules

1947.Phenylmenthane 1948.NaHCO3 and Boiling Point 1949.Sodium Borate and Glue 1950.Heating Iodized Salt 1951.Energy and Diffusion 1952.Water Stain Removal 1953.Electron Transition and Energy 1954.Indicator and Windex 1955.Stained Glass Colors 1956.H2S and Igniting on Water 1957.Periodic Trends in Spectra 1958.Tomatoes, Cans, and Acids 1959.Positive Activation Energy 1960.Calcium Chloride and Baking Soda 1961.Cold Fruit and Current 1962.Colored Crystal Creation 1963.Oxyacids 1964.NaOH and Al Precipitate 1965.Water in Clock Reaction 1966.Buffer Construction 1967.Washing in Salt Water 1968.High Density Gas 1969.ACQ Wood Preservatives 1970.Energy and Diffusion 1971.Making Ozone 1972.Nitrate Titrations 1973.Atomic Crystal Structure 1974.Forming Sodium Bicarbonate 1975.Dissolving Diamonds 1976.Specific Heat and Solutions 1977.Diaper Wetness Indicator 1978.Air Volume and Temperature 1979.Radium, Radium Salts 1980.STP and Thermo Standards 4822747.doc

1981.Methanol and Water 1982.Oils and Low Temperatures 1983.Chemically Changing Rose Colors 1984.Phenol Oxalate Ester 1985.Temperature and Disassociation Constant 1986.Creating Liquid Carbon Dioxide 1987.Tritium and Helium 3 1988.Glue and Container Interface 1989.Growing Salt on Sponge vs Charcoal 1990.Less Soluble When Heated 1991.Reaction Giving Light, Not Heat 1992.Gold Plating 1993.Rates of Reaction Importance 1994.Desalination Tablets 1995.Soldering Flux 1996.Dissolving Sugar in Acid 1997.Nail Polish and Materials 1998.Measuring Particle Distance 1999.Water and Tarp System Change 2000.Suborbital Configurations 2001.Measuring Dipole Moments 2002."Neon" Paints 2003.Muriatic Acid and Metal 2004.Octane Production 2005.Heating Salt 2006.How Does Glue Stick? 2007.Galvanizing Disadvantages 2008.Flammability and Oxygen 2009.Petroleum Jelly and Flammability 2010.Iron in Beans 2011.Gas Dyes 2012.Charcoal 2013.Alcohols and Foods 2014.Titration, Indicator, and Results 2015.Sodium Hydroxide-Aluminum Toxicity 2016.Determining Acid Strength 2017.Entropy and Hydrocarbons 2018.Purity of Water and Dissolve Rate 2019.Burning Methane vs Propane 2020.Alcohols and Foods 2021.Copper and Cadmium 2022.Vacuum Temperature 2023.Vinegar, Baking Soda and Drains 2024.Pure vs Impure Metals and Corrosion 2025.Oxygen Levels in Salt and Fresh Water 2026.Petroleum Jelly and Flammability 2027.Solubility and Temperature 2028.Substance Burning in Water 2029.Standard States and Methanol 2030.Gold and Gold Alloy Density 2031.Ligand and Color 2032.Determining Oxygen Content of Air 2033.Heavy Metal Testing 2034.Head Room In Opened Carbonated Drink 2035.Solid Bromine Density 2036.Calcium Chloride Hexa and Tetra Hydrate 2037.Energy in Liquids vs Solids 2038.Batteries and Salt Water 2039.Edibility and Water Softener Salts 12

2040.UV Lamps and Ozone 2041.Stopper Materials for Acids and Bases 2042.Stratifying Gas in Tanks 2043.Alcohol, Water and Cloth Burning 2044.Disposing EDA 2045.Coal Into Gasoline 2046.Carbon Dioxide Removal 2047.Making Hydrogen 2048.Oscillating Blue Reaction 2049.Heavy Metal Testing 2050.Percentage of Carbon in Steel 2051.Dissolved Oxygen and Temperature 2052.Water Expansion with Temperature 2053.Raising Boiling Point of Water 2054.Pyrolysis of Sugars 2055.Marshmallow Expansion in Microwave 2056.Oxygen Levels in Salt and Fresh Water 2057.Water, Glue, Borax, and Color 2058.Meaning of pKa 2059.Lemon and Chlorine 2060.Biopolymers 2061.Calibrating a pH Meter 2062.Knowing What Chemicals React 2063.Uncured Paint and Styrofoam 2064.Naphthalene and Ammunitions 2065.Likes Dissolve Likes 2066.Graphite and Neutrons 2067.Salad Dressing Goof 2068.Solution pH and Temperature 2069.Heating Wood In Vacuum 2070.Apparent Size and Distance 2071.Pig Iron's Name 2072.Quantifying CO2 in the Classroom 2073.Acetone Structure and Properties 2074.Dissolving Urushiol Oil 2075.Alkanes, Cumbustion and Temperature 2076.Determining Metal of Pressed Ceiling 2077.CH2CF3CH3 2078.Dessicant Absorbs Water, Not Oil 2079.Burning Magnesium 2080.Evaporate and Color, Phenolphthalein 2081.Carbon Monoxide and Density 2082.Ester Production 2083.Single vs Large Crystals 2084.Dead Batteries 2085.SO2 and NOx Control 2086.Chlorinated Sugar 2087.Etching Nickel 2088.Liquid at Top of Capillary Tube 2089.Different Glass Cleaners 2090.Asymmetrical Molecular Properties 2091.Solar to Chemical Energy Transfer 2092.Removing Fishy Smell 2093.Carbon and Life 2094.Source of Chlorine In Water 2095.Thermometer Limits 2096.Structural and Geometric Isomers 2097.Fine Art Restoration 2098.Mossy Zinc C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

2099.Making Anhydrous MgSO4 2100.Absorbing Atmospheric Chlorine 2101.Electrons for Cloud 2102.Plastic and Living Organics 2103.Hard Cooked Egg and Density 2104.Chrome Plating History 2105.Etching Nickel 2106.Chromium Valence 2107.Identifying Copper and Brass 2108.Salad Dressing Timing 2109.Non-Volatile Vapor Pressure 2110.Diffusion of Dye 2111.Styrofoam and Acetone 2112.Milk and Hypochlorite 2113.Boiling Chips and Purity 2114.Electrolysis and Location on Rod 2115.Gummy Bears in Water 2116.Vitamin C Test 2117.Invalid Flame Test 2118.Molecule With Most Different Atoms 2119.Fourth Ionization of Lithium 2120.Brass as a Mixture or Compound 2121.Non-Metals and Flame Tests 2122.Bohr Model Shell Population 2123.Knowing Synthetics are Elements 2124.Lake Freezing and Thawing Process 2125.Heat of Fusion for Paraffin 2126.Iron and Stoneware 2127.Burning Calcium Carbonate 2128.Maximum Number of Energy Levels 2129.Testing for Electrolytes 2130.Glauber's Salt 2131.Potassium Safety 2132.Creating Glowing Water 2133.Saturation of CO2 in Water 2134.Mixing Oils 2135.Acids and Emusifying Agents 2136.Type I and Type II Compounds 2137.Stearic Acid Molecule Length 2138.Growing Sugar Crystals 2139.Measuring Lead 2140.Measuring Aluminum in Foods 2141.Paper From Manure 2142.Factors for Salt Solubility 2143.Getting Gold for Rutherford Experiment

2144.Capacity of Liquid to Dissolve 2145.Lemon Juice and Stain Removal 2146.Charles Law Explanation 2147.Deionized Water and Aotoinizing 2148.Iodine, Sublimation, and Melting 2149.Suet, Tallow, and Grease 2150.Acids and Bases as Cleaners 2151.Bleach Action 2152.Zinc from Zincblende 2153.Pig Iron's Name 2154.Heat Flow Direction 2155.Liquid Water at Room Temperature 2156.Acetylene Flammability 2157.Formation of Different Crystals 4822747.doc

2158.Water Evaporation Threshold 2159.Zinc and Copper Sulfate Experiment 2160.Specific Heat and Periodic Table 2161.Water Evaporation Threshold 2162.Oxidation of Hydrocarbons 2163.Elevated Freezing Temperature 2164.H2S and H2O Bonding Angles 2165.Molecular Velocities 2166.Aluminum Chloride 2167.DNALP 2168.Ethanol Substitute 2169.Gold Crystal Structure 2170.Iron in Cars and Vitamins 2171.Making Ozone for Experiment 2172.Mole Term Origin 2173.Reversing Plastic Decay 2174.s Orbital and Angular Momentum 2175.Xenon Tetrafluoride Fabrication 2176.Ethanol Substitute 2177.Copper Chloride Experiment 2178.Bohr Model and Spectra 2179.Non-ionizing Solutes in Water 2180.Lithium and Berylium Ionization 2181.Ozone Bond Lengths 2182.Flour and Cookies 2183.Conservation of Mass Experiment 2184.Elements and Formation Time 2185.Gold Crystal Structure 2186.Quantum Dots 2187.Rocket Fuel Without Air 2188.Rust? on Ducts 2189.Thermometer Limits 2190.Battery Type and Life 2191.Lower Atmosphere Ozone Formation 2192.Making Crystals (K-3) 2193.Measuring Sulfur in Food 2194.Clear Emulsifier, Water, and Oil Combination 2195.Anion and Cation Testing Applications

2196.Electolysis and Salts 2197.Mass Number for Isotopes 2198.Phase Change: Exothermic or Endothermic

2199.Specific Heat and Density 2200.Carbon Chaining 2201.Antifreeze Applications 2202.Ball and Stick to Predict Dipole 2203.Bonding and Electronegativity 2204.Iron in Cars and Vitamins 2205.Mole Term Origin 2206.Nitrogen Electrical Structure 2207.Gold Crystal Structure 2208.Salt Extraction Method 2209.Soil Testing for Copper 2210.Carbon Dioxide and Lithium Hydroxide 2211.Burning Gasoline Problem 2212.Carbon Chaining 2213.Diffusion in Liquids 2214.Liquids From Gases 2215.Washing Citric Acid and Temperature 13

2216.Thermodynamics of Chewing Gum 2217.Heat Flow Ambient and Vacuum 2218.Electron Density and Quantum Number 2219.Chemical Reaction and Energy 2220.Fire and Oxygen 2221.Gasoline and Homogenous Mixture 2222.Vinegar and Copper 2223.Types of Water and Rust 2224.Dye for Covalent Bonds 2225.Uranium vs Carbon Density 2226.Beryllium Hydroxide Amphoteric 2227.H40++ 2228.Copper Buttons, Cloth, and Bleach 2229.Hot Well Water and Heating Elements 2230.Water Temperature and Detergent Enzymes

2231.Triple Point and Sublimation 2232.States of Matter Census 2233.Combustion Experiment 2234.Determining Chlorine in Tap Water 2235.Acid and Dissolving Sugar 2236.Metal Salt Disposal 2237.Chemical Reaction and Energy 2238.Flammability of Carbon Group 2239.Discoloration of Paintings 2240.Alkanes, Alkenes, and Alkynes 2241.NaI and Sulfuric Acid 2242.Titration Callibration and NaOH and KOH 2243.Vitamin C, Sulphuric Acid and Indicator 2244.Crystal Shapes 2245.Frozen Water as a Conductor 2246.Cookie Dough and Phase 2247.Magnesium and CO2 2248.Adding Acid to Buffered Solution 2249.Density of A Powder 2250.Stoichiometry Roots 2251.Mass - Energy Conversion in Chemical Reactions

2252.Sodium Sulfate, Electrolysis, Color Change

2253.Glass vs. Plastic for Crystal Growth 2254.Sodium Polyacrylate Limits 2255.Biodegradability Timeline 2256.Bonds and Molecular Formation 2257.Cake and Altitude 2258.Copper Sulfate in Nature 2259.Freezing Rates of Fluid Mixtures 2260.2-phenyl-cis-2-butene 2261.Chalcogens 2262.Isooctane versus n-octane 2263.NaCl versus NaCl2 2264.Magnesium Fire Temperature 2265.Hydrogen Bond 2266.Burning Sugar Products 2267.Ammonium Hydroxide and Chlorine Leaks

2268.Alcohol in Cologne 2269.Time for Patina To Form 2270.NaCO3 as Acid and Base 2271.Reactant or Catalyst

C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

2272.Fat Extraction 2273.Pencil Composition 2274.Rust, Iron II or III 2275.Elements and Isotropy 2276.Solution Dropping pH in Air 2277.Naming Semi- and Non- Metal Compounds

2278.Methanol and Blindness 2279.Lye and Sodium Reaction 2280.Finding Neutrons in Isotopes 2281.Fluorine and Chlorine Combination 2282.Finding Cobalt Chloride 2283.Oxidation State, Charge, Valence 2284.Hybridization and Carbon Tetrachloride

2285.Alkaline Earth Hydroxide 2286.Heat and Pressure Dynamics 2287.Hydrated Crystal 2288.Same Reactants Different Products 2289.Thermal Energy and State of Matter 2290.Carbon Dioxide and Water 2291.Conductivity and Ion Solution Color 2292.Acid Strength versus Concentration 2293.La Brea and Roofing Tar 2294.Making Vinegar 2295.Plastic Polymer and Decay 2296.Quantity and Rate of Reaction 2297.Standardizing Chemical Measures 2298.Synthetic Hydrocarbon Production 2299.Zinc from Zincblende 2300.Softener Waste Water Usage 2301.Luminol Reaction 2302.Toothpaste and Food Wax 2303.N-H and C-h Bond Strength 2304.Determining Polarity Intensity 2305.Proper Pipette Usage 2306.Melting a Benzoic Acid-Sodium Sulfate Mixture

2307.Dalton Calculation 2308.Solutions, Oil, Carbon Tetrachloride 2309.Platinum Noble Metal, and Hydrogen 2310.Hard Water Measurement 2311.Titration and Antacids 2312.Phosphorescence and Florescence Distinction

2313.Water Expansion When Freezing 2314.C-C and C-H Bonding Energy 2315.Conditions for Sublimation Over Melting

2316.Gas Laws Demonstrations 2317.pH of Non-Water Solutions 2318.Detecting Caffeine 2319.Physical Chemists 2320.Measuring Acid Rain 2321.Copper Plating 2322.Corrosion and Salt Concentration 2323.Calcium Chloride and Potable Water 2324.Iron Oxide Precipitate 2325.Buffer and Neutral pH 2326.Carbon Monoxide and Combustion 2327.As, Pb, F Testing of Water 4822747.doc

2328.Sublimation of FeCL3 2329.Maximum Atomic Shells 2330.Electron Structure and Chemical Behavior 2331.Cohesive Forces and Phase Transition 2332.Carbon Dioxide and Nitrogen Testing 2333.Sample Placement for Flame Test 2334.Heats of Formation 2335.Cohesive Property of Water 2336.Largest Number of Isotopes 2337.Ozone and MPG 2338.pH Differences 2339.Discoloration of Metal and Corrosion 2340.Double Covalent vs. Ionic Bonds 2341.Heaviest Gas 2342.Margarine and Plastics 2343.Cobalt Chloride Indicator Application 2344.Determining Flame Temperature 2345.Hund's Rule 2346.Impurities and Distilled Water 2347.Magnets and Electrolysis 2348.Strawberries, Sugar, and Density 2349.Vacuums and Thermal Energy 2350.Silly String 2351.Milk and Vinegar Reaction 2352.Molar Mass and Titration 2353.Period 8 Electron Configuration 2354.Reactivity of Chlorine Atom and Ion 2355.Shellac 2356.Strawberries, Sugar, and Density 2357.Technical and Reagen Grades 2358.Mass-Energy Conservation in Reactions 2359.Copper Sulfate Color 2360.Charge on Fe3O2 Iron Ion 2361.Quantify Vitamin C 2362.Bonding and Odors 2363.Food Coloring and Color Change 2364.Heat From Acid and Water 2365.Isotope Formation 2366.Solute and Heating Rate 2367.Water, Copper, and Copper Pipes 2368.Technical and Reagen Grades 2369.Crystals of Copper Sulfate 2370.Water Deposits and Magnets 2371.Density of Elemental Mercury (Solid) 2372.Balloon and Liquid Nitrogen and Gas Laws

2373.Black Flame 2374.Bonding and Odors 2375.Teaching Bohr Atomic Model 2376.Hydroxyl, Carbonyl and Carboxyl Membership

2377.Bonds and Stains on Fabrics 2378.Conservation of Mass Lab 2379.Copper +1 s or d Electron 2380.pH Comparison 2381.Polar covalent Bond Energy 2382.Salt and Electrolysis 2383.Sodium Acetate Crystalline Trigger 2384.Acetone, Water, and Chromatography 2385.Color and Chemical Structure 14

2386.Dissolving Materials 2387.Burning Paraffin and Soy Wax 2388.Water, Chlorine and Dissolved Oxygen 2389.pH-Stat Test With Antacids 2390.Psychrometer Type Experiment 2391.Super Glue Fumes and Finger Prints 2392.Oil Absorbing Polymer 2393.Precipitate Demonstration 2394.Action of Glue 2395.Density and Heat of Fusion 2396.Paraffin, Redox, and Balancing 2397.Synthetic Element Inventory 2398.Temperature and Phase Transition 2399.Aluminum and Potassium Hydroxide 2400.Concentration and Boiling Point 2401.Measuring Rust Amounts 2402.Structure of Petroleum Ether 2403.Sodium Polyacrylate and NOT Water 2404.Classification of Noble Gases 2405.Ice Density at Low Temperatures 2406.Ionic Salt Precipitate 2407.Magnesium and Calcium Melting Points 2408.Gold Creation and Formation 2409.Melting Temperatures of Solutions 2410.Sodium, Hydrogen Halides and Melting 2411.Reduced Solubility and Higher Temperature

2412.Acetic Acid CH3COOH not C2H4O2 2413.Molecular Geometry Importance 2414.Silver and Carbonation 2415.Crystal Formation and Alkaline Level 2416.Crystal Formation on String and Metal 2417.Ammonia Safety 2418.Dangling Valences 2419.Wood as a Chemical 2420.Isomers and Boiling Point Determination 2421.Copper and Blue 2422.Penny, Vinegar, and Blue Leftover 2423.Salad Dressing 2424.Solute and Evaporation Rate 2425.Polystyrene, Polypropylene and Microwaves

2426.Activated Charcoal and Auto Exhaust 2427.Lithium and Carbon 2428.Anion OR Cation Only Solution 2429.Model Atoms and Electrons 2430.Measuring Carbonation Level 2431.Polystyrene, Polypropylene and Microwaves

2432.Electrons and Chemical Reactions 2433.Heating Lemon Juice 2434.Lowering Vapor Pressure 2435.Reaction Explanation 2436.Soap and Surface Tension 2437.Solute and Boiling Point 2438.CaO and pH 2439.Copper Rust 2440.Rusting of Iron vs Bronze 2441.Electronegativity, Lattice Energy, Ionic Bonds

C J Higgs ~ RES ~ 2008

SCIENCE PRACTICAL ACTIVITIES

2442.Dry Ice Sublimation and Water Temperature

2443.Solubility Decrease with Temperature 2444.Powdered vs Mossy Zinc Substitution 2445.Colorimeter and Spectrophotometer 2446.Determining Degree of Polarization 2447.Salt and Saponification 2448.Activated Charcoal 2449.Predicting Phase in Reaction Products 2450.Acid and Base Electrochemistry 2451.Fe+2 Detection 2452.Phosphate and Stain Removal 2453.Acetic Acid CH3COOH not C2H4O2 2454.Heat and Gas Distribution 2455.Pressure Release and Temperature 2456.Determining Stove Flame Temperature

2457.Acid Burning Through Materials 2458.Nitrogen vs. "Air" Size 2459.Collecting CO2 Upon Release 2460.pH and Molarity 2461.Radioactive and Non-Radioactive Isotopes

2462.Iron, Copper Chloride, and Copper Sulfate

2463.Acid Burning Through Materials 2464.Acid Burning Through Materials 2465.Acid Burning Through Materials 2466.Acid Burning Through Materials 2467.Acid Burning Through Materials http://www.newton.dep.anl.gov/aska sci/chem98.htm

4822747.doc

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C J Higgs ~ RES ~ 2008