Chemistry Notes

MATTER AND CHANGE Name _____________________________________
PRACTICE PROBLEMS Period _________________ Date ______________

SECTION 2.1 MATTER
1. Which of the following is not a physical change? a. dissolving sugar in water b. burning gasoline in an engine c. evaporating sea water to obtain salt d. slicing a piece of bread

2. Which of the following is not a property of a gas? a. has a definite shape b. has no definite volume c. assumes the shape of its container d. easily compressible

3. Which of the following is not a physical property of sucrose? a. solid at room temperature b. decomposes when heated c. dissolves in water d. tastes sweet

4. Which of the following is typically in a different physical state than the other three at room temperature? a. salt b. sugar c. flour d. water

5. Complete the following table.
|Physical State |Definite Shape? |Definite Volume? |Readily compressible? |
|gas | | | |
| |no | |no |
| |yes | | |

Use Table 2.1 on page 29 in your textbook to answer the following questions.

6. Which substance is a colored gas? ______________________

7. Which liquids boil at a lower temperature than water? ___________________________________________

8. For which substances would 2 cm3 have a mass greater than 6 g? _________________________________

SECTION 2.2 MIXTURES

1. How might one separate a mixture of water and salt?

2. What is a