Chapter 6 Mini-test
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1. The temperature at which a liquid becomes a gas is the ____ point.
a) freezing b) boiling c) condensation d) melting
____
2. Matter may be found in the plasma state in ____.
a) blood b) livers c) rivers d) lightning
____
3. The measure of the average kinetic energy of the particles of a substance is the ____.
a) temperature b) heat c) thermal energy d) kinetic energy
____
4. The freezing point of a substance is ____ the melting point of the same substance.
a) greater than b) less than c) equal to d) unrelated to
____
5. Kinetic energy is the ____ of motion.
a) temperature b) energy c) heat d) state
____
6. In which of the following pairs of characteristics of an element are the temperatures the same?
a) boiling point and freezing point b) condensation point and melting point
c) freezing point and
condensation point d) melting point and freezing point
Figure 2
____
7. Refer to Figure 2. In which of the following beakers of water is the average kinetic energy of the water
molecules greatest?
a) A b) B c) C d) D
____
8. Refer to Figure 2. In which of the following beakers do the water molecules have the least amount of average
kinetic energy?
a) A b) B c) C d) D
____
9. A microwave oven can make water boil in a couple of minutes. In which of these ways might a microwave oven
change the state of water?
a) by increasing the speed of the moving water molecules b) by causing the molecules of water to split apart
c) by making heat flow into the water d) by changing the condensation point of water
____ 10. Which of the following will occur as the speed of the molecules in a substance increases?
a) The substance will become cooler. b) The substance will begin to take up less space. c) The force of
attraction between the molecules will decrease. d) The force of attraction that draws objects to Earth will
increase.
Figure 4
____ 11. Figure 4 shows some matter in a beaker. Which statement best expresses how you know the matter is a solid?
a) The matter did not take the shape of the container. b) The matter has a shape. c) The matter takes up
space. d) The matter did not spread out to fill the container.
Figure 5
____ 12. Figure 5 shows how the temperature of a substance changed as it was heated. Which segment of the graph
indicates that the substance was undergoing a change of state?
a) A b) B c) C d) D
____ 13. Figure 5 shows how the temperature of a substance changed as it was heated. Suppose that the substance was a
liquid during the time represented by segment A. Which process was probably occurring during the time
represented by segment B?
a) cooling b) condensation c) warming d) vaporization
____ 14. Figure 5 shows how the temperature of a substance changed as it was heated. Suppose that the substance was a
liquid during the time represented by segment D. Which process was probably occurring during the time
represented by segment B?
a) freezing b) melting c) deposition d) evaporation
Figure 6
____ 15. Figure 6 shows a portion of the water cycle, the process by which water moves through different parts of the
environment. Which of the following best describes the general process by which water moves in this part of the
water cycle?
a) chemical change b) vaporization c) precipitation d) change of state
Figure 7
____ 16. Figure 7 shows the particles of a substance. Which of the following processes could be occurring?
a) evaporation or condensation b) deposition or freezing c) freezing or sublimation d) sublimation or
deposition
Figure 9
____ 17. Figure 9 shows how the temperature of a substance changed over time. Which segment represents a period of
time when the substance was changing from a gas to a liquid?
a) A b) B c) C d) D
____ 18. Figure 9 above shows how the temperature of a substance changed over time. Which segment of the graph line
shows a period of cooling?
a) A only b) B only c) A and C d) B and D
____ 19. Figure 9 above shows how the temperature of a substance changed over time. Which segment of the graph
represents a period of time in which the substance was a liquid?
a) A b) B c) C d) D
____ 20. Figure 9 above shows how the temperature of a common substance changed on Earth over time. In which state
will the substance exist after the period of time represented by segment D has passed?
a) gas b) liquid c) plasma d) solid
____ 21. Which of the following items would be best to use for demonstrating the particles in a solid?
a) bar magnets b) jelly beans c) steel balls d) wooden blocks
____ 22. Adding air to a balloon will cause the balloon to inflate. Which of the following would cause the inflated
balloon to become larger?
a) cooling the balloon b) popping the balloon c) squeezing the balloon d) warming the balloon
Completion
Complete each statement.
23. The temperature at which water boils is ____________________.
24. The change in state from a gas to a liquid is called ____________________.
25. The temperature at which ice changes into liquid water is called its ____________________.
26. Vaporization is when a ____________________ changes into a ____________________.
Figure 10
27. Figure 10 shows a liquid in the process of ____________________.
28. The temperature of the liquid shown in Figure 10 is the ____________________ point.
29. The liquid shown in Figure 10 will become a ____________________ with further heating.
30. If the substance shown in Figure 10 is cooled, it will first become a ____________________.
Chapter 8 Mini-Test (Take-Home)
Heading__________________________
Multiple Choice: Identify the choice that best completes the statement or answers the question.
1.Which of the following changes is chemical rather than physical?
a) Water is boiled.
b) Aluminum foil is crumpled. c) Glass is shattered.
d) Wood is burned.
2.Each substance written to the right of the arrow in a chemical equation is a ____.
a) reactant b) product c) precipitate d) catalyst
3.According to the law of conservation of mass, how does the mass of the products in a chemical reaction
compare to the mass of the reactants?
a) There is no relationship. b) The mass of products is sometimes greater.
c) The mass of reactants is greater. d) The masses are always equal.
4.Which of the following changes gives NO evidence that a chemical reaction has taken place?
a) A cube of solid forms a puddle of liquid.
b) A certain liquid is added to a solid, and bubbles of gas form.
c) Two liquids are mixed, and a precipitate forms. d) Heating a blue solid turns the solid white.
5.When the following chemical reaction is balanced, what number is placed before NH3?
N2 + 3H2  NH3
a) 1
b) 2
c) 3
d) 6
6.Which chemical equation is balanced?
a) Na + O2  Na2O b) 2Na2 + O2  2Na2O
c) 2Na + 2O2  2Na2O
7.The ability of an apple to change color when exposed to air is a ____.
a) physical property b) chemical property c) physical change
8.Which of the following is NOT a possible sign of a chemical change?
a) a change in state
b) a change in color c) the release of a gas
d) 5Na + O2  2Na2O
d) chemical change
d) the release of energy
9.When a newspaper is left in direct sunlight for a few days, the paper begins to turn yellow. The yellow color is
evidence of a ____.
a) physical property b) chemical property c) physical change
d) chemical change
10. Figure 1 lists some substances and two important properties of each one. Which substance would be the best
choice to use when making a frying pan?
a) substance W b) substance X c) substance Y d) substance Z
Figure 1
Chapter 8 Mini-Test (Take-Home)
Heading__________________________
11.Which change can be reversed by changing the temperature?
a) a spoonful of pancake batter cooking in a hot pan
b) water droplets condensing on the outside of a glass of ice-cold lemonade
c) a lit firecracker exploding into bright bursts of different colors
d) a chicken egg hatching into a baby chick when the egg is kept warm
12.Which statement is true of acids?
a) pH levels are less than 7, sour taste, turns red litmus paper blue, and examples include vinegar and urine.
b) pH levels are greater than 7, bitter taste, feels slippery to the touch, and examples include vinegar and urine.
c) pH levels equal 7, sour taste, turns blue litmus paper red, and examples include baking soda and soaps.
d) pH levels are less than 7, sour taste, turns blue litmus paper red, and examples include vinegar and urine.
13.How many hydrogen atoms are there in the compound:
a) 3
b) 8
c) 10
d) 14
?
14.Which statement is true of bases?
a) pH levels are greater than 7, bitter taste, feels slippery to the touch, and examples include baking soda and soaps.
b) pH levels are less than 7, sour taste, turns blue litmus paper red, and examples include baking soda and soaps.
c) pH levels equal 7, sour taste, turns red litmus paper blue, and examples include vinegar and urine
d) pH levels are greater than 7, bitter taste, turns blue litmus paper red, and examples include baking soda and soaps.
15.The diagram to the right shows a molecule of ammonia. Which is the correct
formula for a molecule of ammonia?
a) NH b) 3NH c) NH3 d) N3H
Match each item with the best description below. There is only one answer for each.
a)
b)
c)
d)
physical change
conservation of mass
chemical change
exothermic
e)
f)
g)
h)
16.reaction that absorbs energy
17.frying an egg
18.number of atoms in a chemical formula
19.present before chemical reaction
product
reactant
endothermic
subscript
20.reactant mass equals product mass
21.ice melting
22.reaction that releases energy
23.present after chemical reaction
Match the type of property with the example. Each choice will be used more than once.
a) physical property
b) chemical property
24.a box measures 4 cm by 3 cm by 8 cm
25.the liquid burned easily
26.muffins baked for 20 minutes until done
27.the dessert tasted rich and chocolaty
Determine whether the following chemical equations are unbalanced or balanced.
a) unbalanced
b) balanced
28.
H2 + O2  H2O
29.
P4+ 5O2  P4O10
30.
Fe2O3 + CO  2Fe + CO2