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