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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Buck has 4 beakers, each of
which contains 500mL of distilled water. The water in each beaker is held to a different temperature.
Beaker
1 20 degrees C
Beaker
2 15 degrees C
Beaker
3 5 degress C
Beaker
4 35 degress C
Buck adds 5 grams of sugar to each beaker
simultaneously. In which beaker will the sugar dissolve the fastest? a) | Beaker 1 | c) | Beaker 3 | b) | Beaker 2 | d) | Beaker 4 | | | | |
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2)
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A granulated solid has been
added to a flask containing a liquid. Which of the following will DECREASE the rate at which the the
solute dissolves ? a) | shake it | d) | add more solvent | b) | heat it | e) | stir it | c) | add more solute | | | | |
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3)
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Which of the following will
SLOW down a chemical reaction? a) | catalyst | c) | inhibitor | b) | enzyme | | | | |
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4)
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If you wished to speed up a
biochemical process, which of the following would be the BEST to use? a) | an inhibitor | b) | an enzyme | | | | |
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5)
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Zinc dissolves in hydrocholoric
acid. Denise has four beakers containing solutions of acid and distilled water. She
places a 1 gram ribbon of zinc into each of the beakers simultaneously, in which beaker will the
ribbon of zinc dissolve the fastest?
Acid
Water
Beaker
1
50 mL
50 mL
Beaker
2
10 mL
20 mL
Beaker
3
70 mL
100 mL
Beaker
4
5 mL
20 mL
a) | Beaker 1 | c) | Beaker 3 | b) | Beaker 2 | d) | Beaker 4 | | | | |
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