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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The
forces that hold different atoms or ions together are a. | electric
currents. | c. | physical
bonds. | b. | chemical bonds. | d. | nuclear forces. | | | | |
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2.
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A
mixture is different from a compound because each substance in a mixture a. | retains its own
properties. | c. | forms an
ion. | b. | changes its
electric charge. | d. | changes from a
solid to a liquid. | | | | |
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3.
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Each
molecule of hydrochloric acid, HCl, contains one atom of hydrogen and a. | one atom of
chlorine. | c. | two atoms of
chlorine. | b. | one atom of oxygen. | d. | two atoms of oxygen. | | | | |
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4.
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An
ionic bond is a bond that forms between a. | ions with opposite charges. | b. | atoms with
neutral charges. | c. | one atom's nucleus and another atom's
electrons. | d. | the electrons of two different atoms. | | |
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5.
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Covalent bonds are formed between a. | ions. | c. | nonmetal atoms. | b. | metal
atoms. | d. | compounds. | | | | |
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6.
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In
which type of bond do atoms share electrons? a. | covalent bonds | c. | ionic bonds | b. | metallic
bonds | d. | polyatomic
bonds | | | | |
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7.
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The
name dinitrogen tetroxide tells you that this compound contains a. | two nitrogen
atoms and two oxygen atoms. | b. | four nitrogen atoms and two oxygen
atoms. | c. | two nitrogen atoms and four oxygen
atoms. | d. | four nitrogen atoms and four oxygen
atoms. | | |
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8.
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A
positive ion is called a a. | anion | c. | particle ion | b. | cation | d. | unbalanced | | | | |
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9.
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A
molecule is a compound held together with a a. | covalent bond | c. | polar | b. | ionic
bond | d. | non-polar | | | | |
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10.
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What
is the formula for the compound formed by calcium ions and chloride ions? a. | CaCl | c. | CaCl3 | b. | Ca2Cl | d. | CaCl2 | | | | |
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