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