Physical Science Unit 4 Study Guide

Physical Science 4 Study Guide • Physical and Chemical Properties 1. What is the difference between a physical change and a chemical change? 2. Which type of property involves a change in the chemical structure? 3. Which type of property where there is no change in the chemical structure? 4. Which type of property do you end up with something different than what you started with? 5. Which type of property do you end up with the same thing as what you started with? 6. What are some examples of physical properties? 7. What are some examples of chemical properties? 8. Does the term boiling point refer to a temperature or a phase change? 9. Does the composition of a substance change during a phase change? 10. 5.0g of substance X has a volume of 10.0 mL. What is the density of substance X? 11. Is the density of solid substance X the same as liquid substance X? 12. While making Koolaid you add some sugar to some water. In this solution, sugar is the (solute, solvent) and water is the (solute, solvent). 13. When you add sugar to water, does the sugar chemically bond to the water? 14. Do the components of a solution retain their own individual properties? 15. What physical property is closest to ‘gooiness’ 16. Metals tend to be (conductors, insulators) and nonmetals tend to be (conductors, insulators). 17. Can solutions conduct electricity? • More About Physical and Chemical Changes (The PowerPoint Slides handout with 6 boxes) 18. Is there a change in chemical composition in a physical change? 19. What chemical property is a general term that refers to the breakdown of material by its environment? 20. What chemical property occurs when one substance combines with oxygen to form another new substance? 21. What chemical property is a rapid form of oxidation?

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How does temperature, particle size, and agitation affect how quickly something dissolves?

22. When something dissolves what is happening? 23. Are bonds broken when something dissolves? 24. What is the difference between solubility and the rate of solution? 25. What does agitation mean (in science) 26. The more something is agitated the (faster, slower) a solute dissolves. 27. The smaller the particles the (faster, slower) a solute dissolves. 28. What is the relationship between particle size and surface area? 29. The higher the temperature the (faster, slower) something dissolves. 30. Solubility is a (physical property, chemical property) because what you end up with is (the same as, different than) what you started with. • Classification of Matter: Pure Substances or Mixtures? 31. What are the two types of pure substances? 32. What is the difference between an element and a compound? 33. How do the properties of compounds compare with the elements that make them up? 34. Can compounds be physically separated? 35. Which of the following has a definite chemical composition: mixture, compound, both mixture and compound. 36. Do the component substances in a mixture retain their own properties? 37. Can the components of mixtures be physically separated? 38. What is the difference between a heterogeneous mixture and a homogeneous mixture? 39. What type of mixture is a solution?