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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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In 1869, what Russian scientist developed a periodic table by grouping
elements by increasing atomic mass? a. | Paracelcius | d. | Mendeleev | b. | Scheele | e. | Preston | c. | Dalton | | | | |
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2.
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What
do we call atoms of the same atomic number having different masses? a. | protons | d. | nucleus | b. | electrons | e. | isotopes | c. | neutrons | | | | |
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3.
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The following glassware/hardware will not be used in
this experiment: a. | scissors | c. | small
beakers | b. | glue | d. | thermometer | | | | |
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4.
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What is the vegium sample representing in this laboratory
exercise? a. | a fictitious
proton | d. | a fictitious
element | b. | a fictitious electron | e. | a fictitious periodic table | c. | a fictitious
neutron | | | | |
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5.
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What is contained in the vegium sample?
a. | salt, sugar,
baking powder | d. | sugar, baking
powder, baking soda | b. | salt, sugar, baking soda |
e. | black beans, brown beans, green beens | c. | salt, baking
powder, baking soda |
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6.
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What
is the atomic number for magnesium?
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7.
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Which
of the following is a noble gas? a. | boron | d. | fluorine | b. | carbon | e. | neon | c. | nitrogen | | | | |
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8.
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Which
of the following is a metal? a. | aluminum | d. | sulfur | b. | silicon | e. | chlorine | c. | phosphorus | | | | |
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9.
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What
is the atomic mass for carbon?
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