Unit 9—Describing Matter Study Guide Answers
Directions: Complete this study guide. You should attempt to do this WITHOUT using your notes.
This is due on _________________
1. A physical property can be observed
a. But it changes the identity of the matter.
b. Without changing the identity of the matter.
c. And doesn’t change.
d. None of the above
2. A chemical property describes a substance
a. Without changing the identity of the matter
b. And are the same for all substances
c. Based on its ability to change into a new substance
d. Based on its ability to change state.
3. What are some examples of physical properties?
Melting point, freezing point, boiling point, density, solubility
4. What are some examples of chemical properties?
Flammability (burning), reactivity, rusting, tarnishing, patina
5. A physical change is a change
a. That changes the substance into a new substance with the same properties
b. That changes the substance into a new substance with different properties
c. That does not change the identity of the substance.
d. All of the above
6. A chemical change is a change
a. That changes the substance into a new substance with the same properties
b. That changes the substance into a new substance with different properties
c. That does not change the identity of the substance.
d. All of the above
7. A characteristic property
a. Is unique to each substance
b. Doesn’t depend on the amount of matter present
c. Can be used to identify a substance
d. All of the above
8. Which of the following is not a physical property
a. Density
b. Boiling point
c. Solubility
d. Flammability
9. Which of the following is not a chemical property
a. Reactivity
b. Rusting
c. Solubility
d. Flammability
10. If a substance is reactive then
a. It will undergo a physical change
b. Two substances with undergo a chemical change with one another
c. It will do nothing
d. All of the above
11. A change of state is
a. A physical change
b. Chemical change
c. Both (a) and (b)
d. None of the above
12. The statue of liberty turned green because the copper
a. Underwent a physical change
b. Was painted that way
c. Underwent a chemical change
d. All of the above
13. Some examples of physical properties are
a. Mass, volume, and reactivity
b. Patina, rust, and tarnishing
c. Mass, volume, color, texture
d. Density, solubility, and flammability
14. If something is flammable, then
a. It has undergone a chemical change
b. It will burn
c. The substance’s identity has changed
d. All of the above
15. If something has solubility, then
a. It has undergone a physical change
b. It will dissolve into a solvent
c. The substance’s identity has changed
d. Both (a) and (b)
16. A mixture is
a. a compound
b. Made up of 2 or more materials that can be separated by physical means
c. Made up of 2 or more materials that cannot be separated by physical means
d. Both (a) and (b)
17. A solution is
a. A homogeneous mixture
b. Made up of 2 or more materials that look like one substance
c. Has a solute and a solvent
d. All of the above
18. Which of the following are types of solution?
a. A gas in a gas
b. A gas in a liquid
c. A solid in a solid
d. All of the above
19. A suspension is
a. A heterogeneous mixture where the particles are so large that they settle out.
b. A homogeneous mixture where you cannot see the particles dissolved in the solvent
c. Not a mixture
d. None of the above
20. An element is
a. A pure substance that is composed of 2 or more elements that can be separated by
physical means
b. A pure substance that cannot be broken down into any simpler substances using
physical or chemical means
c. All of the above
21. A compound is
a. A pure substance that is composed of 2 or more elements that cannot be
separated by physical means
b. A pure substance that cannot be broken down into any simpler substances using
physical or chemical means
c. All of the above