A) anything that we can see
B) anything that takes up space
C) anything that has mass
D) anything that has mass and takes up space
- 2. What is a substance made up of two or more chemically combined elements in a fixed ratio?
A) mixture
B) compound
C) element
D) solution
- 3. What is table salt (NaCl) classified as?
A) element
B) mixture
C) solution
D) compound
- 4. What is an example of an element?
A) air (N, O, Ar, CO2)
B) salt (NaCl)
C) oxygen (O)
D) water (H2O)
- 5. Which of these is best classified as a mixture?
A) salt (NaCl)
B) propane (C3H8)
C) water (H2O)
D) air (N, O, Ar, CO2)
- 6. A substance with a definite volume and a definite shape is classified as a -
A) solid
B) gas
C) plasma
D) liquid
- 7. Which phase of matter has no definite volume and occupies all the space available to it?
A) solid
B) liquid
C) gas
- 8. Which state of matter is electrically charged an exists at extremely high temperatures?
A) gas
B) plasma
C) liquid
D) solid
- 9. Which state of matter has no definite shape but does have a definite volume?
A) gas
B) liquid
C) plasma
D) solid
- 10. What is a physical property of matter?
A) solubility
B) reactivity
C) combustibility
D) acidity
- 11. Density depends on what two measurements of an object?
A) volume and size
B) mass and volume
C) mass and weight
D) length and width
- 12. What is a chemical property of matter?
A) shape
B) density
C) solubility
D) basicity
- 13. As matter changes from a solid, to a liquid, to a gas, what happens to its particles?
A) they decrease in number
B) they speed up
C) they increase in number
D) they slow down
- 14. As matter turns from a gas, to a liquid, to a solid, the energy of the particles -
A) stays the same
B) increases
C) decreases
- 15. In which phase of matter are the particles most tightly packed?
A) plasma
B) liquid
C) gas
D) solid
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