Unit 2 Review
Name: ________________________
Period: _____________
1. Define Density.
2. What is the formula used to calculate density?
3. What are the units used to express density?
4. Define mass.
5. What instrument measures mass?
6. Define volume.
7. What method and instrument is used to measure the volume of an irregular
object?
8. What method and instrument is used to measure the volume of a regular solid?
Use the 3 cylinders below to answer questions 9 & 10.
Each cylinder has 10ml of liquid.
A
10.0g
B
14.4g
C
9.2g
9. Calculate the density of each liquid. Include the units in each answer
Cylinder A
Cylinder B
Cylinder C
10. List the order of the 3 immiscible liquids (A,B, C) in the cylinder below.
Read pages 81-83, 89-91, & 191 to answer questions 11-20. Circle correct answers
for appropriate questions.
11. Define element. Give 2 examples.
12. Define compound. Give 2 examples.
13. Define mixture. Give 2 examples.
14. If the volume of a gas can change, the volume will increase/decrease when the gas
is heated and increase/decrease when it is cooled.
15. If gas is squeezed into a smaller volume, the pressure of the gas will
increase/decrease and the speed of the molecules will increase/decrease.
16. Particles move slowly/rapidly when they are cooled.
17. Define viscosity.
18. Which phase of matter has the greatest amount of energy? Solid/liquid/gas
19. Do elements/compounds/mixtures, when they are in solid form, move? _______
20. When a liquid is cooled, its particles lose energy and slow down so much that they
stop moving past each other and form a solid/liquid/gas. This process is called
condensation/compression/melting/freezing.
Read pages 98, 101, & 117 to answer questions 21-25
21. The smallest particle of an element is a neutron/proton/electron.
22. The smallest particle of a compound is an element/molecule.
23. Which has a negative charge? neutron/proton/electron
24. Which has a positive charge? neutron/proton/electron
25. Which has no charge? neutron/proton/electron