1. The study of matter and the changes it undergoes is a field of study known as: A. geology B. chemistry C. physics D. biology

2. Anything and everything that has mass and occupies space is known as: A. volume B. a solid C. matter D. a mineral

3. Which one of the following substances is an element? A. piece of paper B. the ink on this page C. oxygen D. sand

4. Which one of the following substances is a pure substance? A. ranch dressing B. table salt C. soda pop D. tap water

5. A sample of matter that has a definite shape and definite volume is: A. a solid B. a liquid C. a gas D. plasma

6. A sample of matter that has an indefinite shape and a definite volume is: A. a solid B. a liquid C. a gas D. plasma

7. A sample of matter that has an indefinite shape and an indefinite volume is: A. a solid B. a liquid C. a gas D. plasma

8. When a gas sample is converted into a liquid, the process is known as: A. freezing B. boiling C. melting D. condensing E. evaporation

9. A. freezing B. boiling C. melting D. condensing E. evaporation When a solid sample is converted into a liquid, the process is known as:

10. When a solid sample is converted into a gas, the process is known as: A. sublimation B. boiling C. melting D. condensing E. deposition

11. The temperature at which a solid is converted into a liquid is called the: A. boiling point B. dew point C. freezing point D. melting point E. condensation point

12. The temperature at which a gas is converted into a liquid is called the: A. boiling point B. dew point C. freezing point D. melting point E. condensation point

13. Which one of the following is a physical property of a liquid? A. indefinite shape B. particles are independent of each other C. highly dense D. indefinite volume

14. Of the three primary states of matter, which one normally has the highest density? A. solid B. liquid C. gas D. not enough information to answer

15. When white, crystalline sugar is heated, it decomposes into a colorless liquid and a black solid. This suggests that sugar is: A. an element B. a mixture C. a compound D. not very dense

16. Which of the following is an example of a chemical change? A. boiling water B. frying chicken C. paint drying D. cutting your hair

17. Which one of the following is a physical change? A. burning wood B. dyeing fabrics C. erasing a mistake D. charging a battery

18. Which of the following is a chemical property? A. density B. reactivity to acid C. color D. length E. luster

19. A sample of brass, a metal alloy, is classified as: A. a pure substance B. a compound C. a homogeneous mixture D. a heterogeneous mixture

20. When an electric current is passed through liquid water, gases begin to form and bubble through the liquid. Water must be: A. a mixture B. an insulator C. an element D. a compound

21. Which one of the following substances is a heterogeneous mixture? A. “smoggy” sky B. apple juice C. mercury D. a nickel