Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Minerals are ____ substances.
a. | carbon-based | c. | living | b. | cell-based | d. | inorganic |
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2.
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____ is/are anything that occupies space and has physical and chemical
properties.
a. | Organic substances | c. | Matter | b. | Inorganic substances | d. | Energy |
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3.
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A(n) ____ cannot chemically be separated into simpler substances.
a. | atom | c. | matter | b. | molecule | d. | element |
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4.
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Chemical combinations of ____ of different elements are compound
molecules.
a. | electrons | c. | three molecules | b. | two or more atoms | d. | organic matter |
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5.
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An example of a ____ is aluminum foil.
a. | salt | c. | pure substance | b. | liquid | d. | gas |
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6.
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Compounds are classified as acids, salts, ____, and bases.
a. | elements | c. | solutions | b. | atoms | d. | oxides |
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7.
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A(n) ____ is any element combined with oxygen.
a. | base | c. | oxide | b. | inorganic compound | d. | organic
compound |
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8.
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An example of a ____ mixture is concrete.
a. | physical | c. | elemental | b. | carbon | d. | chemical |
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9.
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The ____ used in the manufacture of cosmetics is/are processed by
distilling.
a. | minerals | c. | water | b. | matter | d. | elements |
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10.
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The ____ of a substance measures its acidity and alkalinity.
a. | melting point | c. | pH | b. | boiling point | d. | hardness |
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11.
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Pure water has a(n) ____ pH.
a. | acidic | c. | neutral | b. | alkaline | d. | None of the answers are
correct. |
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12.
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The pH of hair and skin is an average of ____.
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13.
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When mixing acids and alkalis, ____ neutralize each other.
a. | more acids than alkalis | c. | equal
proportions | b. | more alkalis than acids | d. | None of the answers are correct. |
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14.
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In the chemical reaction called ____, an element or compound combines with
oxygen.
a. | carbonization | c. | oxidation | b. | reduction | d. | redox |
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15.
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Chemical reactions that give off ____ are called exothermic.
a. | heat | c. | light | b. | smell | d. | oxygen |
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16.
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A substance from which ____ has been removed is a reduced substance.
a. | hydrogen | c. | carbon | b. | nitrogen | d. | oxygen |
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17.
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____ are referred to redox reactions.
a. | Chemical changes | c. | Acid and alkali neutralization reactions | b. | Oxidation and
reduction | d. | Water and pH
changes |
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18.
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Dissolving a ____ in another substance produces a solution.
a. | liquid | c. | gas | b. | solid | d. | All answers are
correct. |
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19.
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A ____ is a substance that is dissolved in another substance.
a. | solution | c. | solute | b. | solvent | d. | liquid |
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20.
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____ are usually water-based.
a. | Glycerins | c. | Cleansing lotions | b. | Deodorant soaps | d. | Cleansing
creams |
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21.
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____ remove superfluous hair by dissolving it at the skin line.
a. | Acids | c. | Deodorant soaps | b. | Shaving soaps | d. | Depilatories |
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22.
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A hydrogen peroxide solution is used as a bleaching agent for the hair in
solutions of ____ volume.
a. | 4 to 10 | c. | 20 to 40 | b. | 15 to 30 | d. | 40 to 50 |
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23.
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____ is a colorless gas composed of hydrogen and nitrogen.
a. | Air | c. | Ammonia | b. | Carbon dioxide | d. | Oxygen |
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24.
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____ are a special type of oil that do not cause comedones.
a. | Mineral oils | c. | Silicones | b. | Walnut oils | d. | Olive oils |
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