Modified True/False
Indicate
whether the sentence or statement is true or false. If false, change the identified word or
phrase to make the sentence or statement true.
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1.
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A
liquid does not have a definite shape, but it does have a definite volume.
_________________________
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2.
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Particles in a liquid move around just as freely as particles in a solid.
_________________________
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3.
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When
the temperature is constant, the volume of a gas will decrease as the pressure decreases.
_________________________
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4.
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In a
rigid container, as the temperature of a gas decreases, the pressure of the gas will decrease.
_________________________
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5.
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In a
flexible container, when the temperature of a gas increases, the volume of the gas will
increase. _________________________
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6.
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The
type of graph that results when the volume of a gas is measured as its pressure is changed (at
constant temperature) is a straight line. _________________________
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7.
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A
cake baking is an example of a chemical change. _________________________
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8.
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Energy that comes from the chemical bonds within matter is called thermal
energy. _________________________
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9.
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Condensation, the change of state from a liquid to a solid, is the reverse of
melting. _________________________
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10.
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In
every chemical reaction, the total amount of energy stays the same.
_________________________
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Essay
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11.
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Compare solids, liquids, and gases in terms of their shapes and volumes.
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12.
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Suppose you buy some inflated party balloons that are at room temperature (about
20°C). What will happen to those balloons if you take them outside on a cold day?
Explain.
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13.
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Explain why a truck tire that has the correct air pressure inside a building at room
temperature (about 20°C) is more likely to explode when driven in hot weather than in cold
weather.
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14.
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Explain what happens as a puddle dries after a rainstorm.
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15.
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Explain how bakers use energy to control chemical reactions when baking
muffins.
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16.
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Explain how the motion of particles differs in gases, liquids, and
solids.
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17.
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Compare two graphs. The first graph results when the temperature of a gas is changed
and the volume is measured. The second graph results when the volume is changed and the pressure is
measured. Explain why the shapes of the graphs are the same or different.
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18.
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Explain why sweating on a hot day can make a person feel cooler.
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