Chapter 1 Review
1. What is matter?
2. Explain the characteristics of and differences between solids, liquids, and gases.
Solids
Liquids
Gases
3. How does increasing the temperature affect the motion of molecules?
4. How does decreasing the temperature affect the motion of molecules?
5. Explain how a thermometer works. Be sure to give detail of molecular motion, how
far apart molecules are, and where they go to change the temperature reading.
6. What differences would you expect if, at the same time, you place yellow and blue
food coloring in both hot and cold water?
Chapter 2 Review
1. What is conduction and explain how it transfers heat energy.
2. What is temperature?
3. What is evaporation? Explain at the molecular level how the energy and motion of
molecules changes during this process.
4. What is condensation? Explain at the molecular level how the energy and motion of
molecules changes during this process.
5. Imagine that you place a drop of water on each of two paper towels. Then you place
one on a bag of hot water and the other on a bag of room temperature water.
Which drop will evaporate first? Why?
6. Complete the Table: Use the key to complete the table below. Each row has a separate key (4
pts.)
KEY:
Speed of Molecules:
Medium, Fast, Slow
Amount of Movement:
Slide past each other, can bounce off each other, vibrate only
Arrangement of Molecules: (one word used more than once)
random, orderly
Distance between molecules:
slightly farther apart than water, close together, very far apart
Compare water molecules in different states
Ice
Speed of Molecules
Amount of movement
Arrangement of
molecules
Distance between
molecules
Water
Water Vapor
Chapter 3 Review
1. What is density?
2. How does temperature affect the density of materials? Explain the molecular
motion in detail.
3. Explain, on the molecular level, why hot water floats on top of cold water. Be sure to
explain:
 Energy/motion of the molecules in hot vs. cold water
 Spacing/density of atoms in hot vs. cold water
4. Bob has mixed up 3 salt solutions and wants to know the correct order in which they will form
layers.
a. Calculate the density of each. (Show the equation you use & your work.)
b. Draw/label in the container where each layer will be.
Color
Volume
Mass
Work:
Blue
35 mL
20 g
Green
40 mL
79 g
Answer:
Draw/Label the Correct Color in order of Layers Below:
top
middle
bottom
Pink
60 mL
27 g
5
If two objects have the same volume but one has a greater mass, the one with greater mass
a) Has a lower density
b) Has a higher density
c) Will float
d) Will sink
6. If two objects have the same volume but one is made up of smaller and heavier atoms, the one with small
heavy atoms will
a) Be larger than the other
c) Be more dense than the other
b) Be less dense than the other
d) Float
7. If you cut a wooden block in half, each half would have
a) Half the density of the original piece
c) The same density as the original piece
b) Twice the density of the original piece
d) No density at all
8. A candle floats in water but sinks in alcohol. This is because
a) The candle has less mass in alcohol
c) The water is more dense than the alcohol
b) The water has less mass than the alcohol
d) Water and alcohol are both liquids
9. If two objects have the same mass but different volumes
a) The one with the larger volume has the lower density
b) They must have the same density
c) The one with the larger volume has the higher density
d) The one with the larger volume is twice as dense
Chapter 4 Review
1. What are the three parts of an atom and what are their charges?
2. What is an atom?
3. What is an element?
4. What does the atomic number tell us?
5. What is an isotope?
6. What is an ionic bond?
7. What is a covalent bond?
Directions: You may use your periodic table for the following questions.
1. For each element listed, identify the number of protons, neutrons, and electrons.
Aluminum (Al)
Tin (Sn)
P_____________
N_____________
E_____________
P_____________
N_____________
E_____________
2. For each element listed, draw the Bohr model.
Additionally, identify the oxidation number of the element as well as what oxidation number it
needs to bond with.
List 2 examples of elements of that oxidation number with which it will bond to become stable.
If it is already stable and would not bond with another element, write “stable.”
Magnesium (Mg)
Helium (He)
Oxidation #_______
Oxidation #_________
Bonds with ox. #__________
Bonds with ox. #__________
Two examples:__________________________________
Two examples:_____________________________
__________________________________
__________________________________
3. Happy or Unhappy? Fill in the chart below to determine if the compound is stable (happy) or
unstable (unhappy).
Chemical Formula Oxidation Numbers for
(Compound)
Each Element
KOH
AlO2
Sum of Oxidation
Numbers
Happy or Unhappy?