Micro Molecule Test 09

I. Multiple Choice 1. What is the atomic mass:

a. 10

b. 20

c. 40

d. 60

e. 80

2. What is the atomic #:

a. 10

b. 20

c. 40

d. 60

e. 80

3. What is the valence #:

a. 1

b. 2

c. 3

d. 4

e. 5

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4. Calcium has ____ electrons:

a. 10

b. 20

c. 40

d. 60

e. 80

5. Calcium’s electronegativity (ability to snatch electrons off of atoms) is: a. Weak b. Average (In between) c. Strong d. Very Strong II. Multiple Choice II 6. Put the following in order from largest to smallest: a. Molecules, Cells, Tissues, Systems, Organs, Organism b. System, Organisms, Organs, Tissue, Cell, Molecule

c. Molecules, Cells, Tissues, Organs, Organism, System d. Organism, System, Organs, Tissues, Cells, Molecules

7. What are the 6 main elements found in all living things: a. C, H, Na, S, Au, O b. O, Cl, N, H, C, K c. C, P, O, S, H, N

d. N, C, H, O, B, P

8. What is cohesion: a. Water molecules sticks to the surfaces of materials b. Water molecules stick to other water molecules

c. Water expands when it freezes d. Water constricts when it freezes

9. What is adhesion: a. Water molecules sticks to the surfaces of materials b. Water molecules stick to other water molecules

c. Water expands when it freezes d. Water constricts when it freezes

10. Why doesn’t a lake freeze solid from top to bottom: a. Ice expands when it gets cold causing it to float. Ice acts like an insulator for the H2O below b. Ice constricts when it gets cold eliminating air pockets between the molecules c. Ice is more dense causing it to pack in the heat which prevents the water from melting d. Water is more dense but expands when it freezes. This allows more O2 to stay in the water. III. Multiple Choice III Laura has a fish tank with 2 different species of fish. The Type A fish live primarily in a pH environment ranging from 7 – 10 , but the Type B fish live primarily in a pH environment ranging from 4 – 7 . When both fish were placed in the supposedly pH 7 tank, the type A fish died. 11. What conclusion can be drawn from this story about the water in the tank: a. It was acidic b. It was neutral c. It was basic d. It was basic & neutral 12. What color should the pH strip turn:

a. Orange

b. Yellow

c. Green

13. Based on the story the tank should have donated what kind of ion(s)?: a. OHb. H+ c. Na+ d. Cle. OH- and H+

d. Blue

e. Red

Heather was checking the pH of her fish tank, which was suppose to be around 6.0. After dipping her pH strip into the water she found that her strip was green. 14. The data suggests that the tank is: a. Strongly acidic b. Slightly acidic

c. Strongly basic

15. Which pH # closely resembles the data in the story: a. 2

d. Slightly basic b. 6

c. 7

d. 8

e. Neutral e. 12

16. Based on the story the tank should have donated what kind of ion(s)?: a. OHb. H+ c. Na+ d. Cle. OH- and H+

17. This an example of what kind of bonding: a. Covalent b. Ionic c. Hydrogen 18. This is an example of: a. Adhesion b. Cohesion

d. London Forces

c. Surface Tension

d. Isotope

19. This is an example of a ____________ molecule a. Organic b. Inorganic c. Element d. Ionization

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20. Based on the scale above, which statement is true: a. Seawater has a higher concentration of hydrogen than tomatoes. b. Tomatoes have a higher concentration of hydrogen than seawater. c. Blood has no hydrogen ions. d. Household ammonia is neutral. 21. Matter is composed of tiny particles called: a. Atoms b. Elements c. Molecules

d. Cells

e. Protons

22. Molecules that have an unequal distribution of charges due to the atoms not sharing the electrons equally are said to be: a. Ion b. Isotope c. Solvent d. Solute e. Polar 23. Why doesn’t water share it’s electrons equally a. Oxygen is very electronegative c. Oxygen is smaller than Hydrogen

b. Hydrogen is very electronegative

d. Hydrogen’s size lets it move faster

24. When comparing the molecules in water versus ice, we can say that: a. Molecules in Ice have more volume c. Molecules in ice have more mass b. Molecules in water have more volume d. Molecules in water have more mass 25. When comparing the molecules in water versus ice, we can say that: a. Ice is more dense c. Ice molecules are more compact b. Water contains more volume d. Water molecules are more compact 26. Why does ice float on water: a. Ice has lower volume c. Ice has greater density b. Ice has higher mass d. Ice has lower density IV. Multiple Choice IV 27. Coca-Cola is an example of: a. Solute b. Solvent

c. Solution

d. Saturation

28. Ramen Noodle seasoning packs are examples of: a. Solute b. Solvent c. Solution d. Saturation 29. Kids Nes Quik in milk. Milk is an example of: a. Solute b. Solvent c. Solution

d. Saturation

30. The valence number for Phosphorus is: a. 2 b. 3 c. 4 d. 5 e. 8 31. Is Phosphorus neutral: a. Yes b. No Isotope

c. Depends

d. Ion

e.

32. Is Phosphorus stable: a. Yes b. No Isotope

c. Depends

d. Ion

e.

33. What is the atomic number of Phosphorus: a. 3

b. 5

c. 15

d. 30

e. 80

34. What is the atomic weight of Phosphorus:

b. 5

c. 15

d. 30

e. 80

a. 3

35. How many different atoms can Phosphorus share electrons with: a. 2 b. 3 c. 4 d. 5 e. 8

36. NH3OH  Has _______ atoms and _______ elements A. 4 atoms and 3 elements C. 3 atoms and 4 elements B. 6 atoms and 3 elements D. 3 atoms and 6 elements 37. Sulfur has an atomic number of 16. Which of the following is NOT an isotope:

A. S32

B. S34

C. S35

D. S40

38. Which of the following is an ion: A P30

E. S45 B. P35

C. Na

D. Cl

E. Na+

39. Jayson starts to sweat causing his body to stay at 37°C. This is an example of: A. Metabolism B. Homeostasis C. Reproduction D. Heredity E. Cells 40. Laura’s body breaks down glucose to release energy and forms sugar to store energy. This is an example of: A. Metabolism B. Homeostasis C. Reproduction D. Heredity E. Cells 41. Which of the following is organic: a. CaCl2

b. NaCl

c. CH3OH

d. Sponge Bob