Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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1.
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Ricardo is measuring the
kinetic energy of the molecules in three 100g samples. The samples he measured were ice, water,
and steam. Which sample had the most kinetic energy? a. | ice | c. | steam | b. | water | d. | none, they all had the same
energy | | | | |
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2.
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Josie has two cubes. The
sides of both cubes are .25m in length. One cube is made of styrofoam, the other cube is made
of wood. Which cube has the greatest density? a. | can not determine | c. | wood cube | b. | styrofoam
cube | d. | both have the same density | | | | |
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3.
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Tyrell has 20mL of a
fluid. He measured the mass of the fluid as 40g. What is the density of Tyrell's
fluid? a. | can not determine | d. | 800 mL*g | b. | .5 mL/g | e. | 2 g/mL | c. | .5 g/mL | | | | |
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4.
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Sam places a beaker of water on
the burner, and turns it on low. As the beaker of water warms, the density of the water
will a. | remain the same | b. | decrease | c. | increase | | |
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5.
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A jeweler has a small pot of
molten gold. He prepares a mold in the shape of a unicorn, then pours the molten gold into the
mold to form a unicorn charm to be worn on a bracelet. Consider the gold in its two forms:
molten and solid. Which of the following assumptions can you make about the density of the
gold? a. | You don't have enough information to make assumptions about the density of the
gold. | c. | The solid gold has a higher density than the molten gold. | b. | The molten gold has a higher density than the solid
gold. | d. | Both the molten gold and the solid gold have the same
density. | | | | |
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6.
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Thom takes a sample of water
and places in a beaker over a bunsen burner. He heats the sample until boils away. Which
statement is most accurate when comparing the water Thom began with, and the water vapor he
produced? a. | the water molecules were farther apart than the vapor
molecules | b. | the water molecules had more kinetic energy than the vapor
molecules | c. | the water molecules took up more space than the vapor
molecules | d. | none of the above | | |
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