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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Which of the following is a charcateristic of nonmetals?
A) | ductile and malleable | B) | always a gas | C) | shiny | D) | poor conductors of
electricity |
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2.
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The specific heat of aluminum is 0.9 J/g°C. How many joules of energy
are required to raise the temperature of 20 g of aluminum from 10 °C to 15 °C? (Ignore
significant figures for this question)
A) | 79 J | B) | 100 J | C) | 112
J | D) | 90 J |
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3.
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Express 0.00382 in scientific notation.
A) | 3.82 x 103 | B) | 3.82 x
10—2 | C) | 3.82 x
10—3 | D) | 0.382 x
10—2 |
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4.
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Each atom of a specific element has the same
A) | number of neutrons | B) | number of protons | C) | atomic
mass | D) | none of the above |
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5.
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An atom of a carbon-14 isotope would
contain:
A) | 6 protons, 8 neutrons, and 6
electrons. | B) | 8 protons, 6
neutrons, and 8 electrons. | C) | 6 protons, 8
neutrons, and 8 electrons. | D) | 14 protons, 6
neutrons, and 6 electrons. |
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6.
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An atom that has the same number of neutrons as
 Ba is:
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7.
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Which one of the following is a main-group nonmetal
element in period number 3 of the periodic table?
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8.
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The number 43250 when rounded to 3 significant figures, would appear as
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9.
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Mouthwash is an example of
A) | a heterogeneous mixture | B) | an element | C) | a
compound | D) | a homogeneous mixture |
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