Chapter 1 Review
1. What is matter?
Matter is anything that has mass and takes up space.
2. Explain the characteristics of and differences between solids, liquids, and gases.
Answers may vary
Solids
Liquids
Gases
Takes shape of container
Keep their shape
Take the shape of container Most amount of movement
Least movement and energy Middle amount of movement and energy
and energy
3. How does increasing the temperature affect the motion of molecules?
Increasing the temperature increases the molecular motion.
4. How does decreasing the temperature affect the motion of molecules?
Decreasing the temperature decreases the molecular motion.
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.
As temperature increases, the molecules inside the thermometer move around more
and spread out. They have nowhere to go but up the tube, increasing the reading on
the thermometer.
6. What differences would you expect if, at the same time, you place yellow and blue
food coloring in both hot and cold water?
They would mix together to form green faster in the hot water than in the cold water.
7.
Chapter 2 Review
1. What is conduction and explain how it transfers heat energy.
Conduction is the transfer of heat energy by direct contact. Energy will always transfer
from where there is more energy to where there is less energy.
2. What is temperature? (Remember…MOLECULAR LEVEL)
Temperature is the measure of the molecular motion/kinetic energy of a material.
3. What is evaporation? Explain at the molecular level how the energy and motion of
molecules changes during this process.
Evaporation is the process of liquid gaining enough energy to change from a liquid to a
gas.
4. What is condensation? Explain at the molecular level how the energy and motion of
molecules changes during this process.
Condensation is the process of a gas losing energy and becoming a liquid.
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?
The drop on the hot water will evaporate first because the hot water will give the drop of
water more energy to change from a liquid to gas and evaporate.
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
Distance between
molecules
Amount of movement
Arrangement of
molecules
Speed of Molecules
Chapter 3 Review
Water Vapor
Very far apart
Ice
Slightly farther
than water
Water
Close together
bounce
Vibrate only
slide
random
orderly
random
fast
slow
medium
Defin & include units
1. What is density? Formula and explanation.
Mass is: weight (g)
Volume is: amount of space (mL or cm3)
Density is the amount of mass in a certain volume. D = m/v
2. How does temperature affect the density of materials? Explain the molecular
motion in detail.
As the temperature increases, the density decreases because the molecules will move
faster and spread out, taking up more space.
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
Hot water molecules have more energy. They will move around more and bounce off of
each other more frequently, spreading out to take up more space and becoming less
dense. Less dense things float on top of more dense things.
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
Pink
60 mL
27 g
D = 20 g / 35 mL
D = 79 g / 40 mL
D = 27 g / 60 mL
.57 g/mL
1.975 g/mL
.45 g/mL
D = m/v
Answer:
Draw/Label the Correct Color in order of Layers Below:
top
middle
bottom
Pink
Blue
Green
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
Please create 2-3 practice review questions, and their answers, for each chapter.
You can Share these with outher students, even on other teams, as a Quizlet.
You should have between 6 and 9 questions total.
Think about what the most important concepts are!