Completion
Complete each sentence or
statement.
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1.
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Matter that always has exactly the same composition is classified as a(an)
____________________.
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2.
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Pure
substances are either ____________________ or ____________________.
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3.
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An
element has a fixed composition because it contains only one type of
____________________.
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4.
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The
symbols for elements have either ____________________ or ____________________ letters.
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5.
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A
compound can be made from two or more elements or other ____________________ joined together in a
fixed composition.
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6.
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The
substances in a(an) ____________________ mixture are evenly distributed throughout the
mixture.
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7.
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In
a(an) ____________________ mixture, the parts of the mixture are noticeably different from one
another.
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8.
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Fresh
milk is a suspension, but homogenized milk is a(an) ____________________.
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9.
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If
the particles in a mixture scatter light, the mixture is either a(an) ____________________ or a(an)
____________________.
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Figure
2-1
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10.
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Based
on the information in Figure 2-1, the ____________________ point of gold is 1064.2ºC and the
____________________ point of gold is 2856.0ºC.
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11.
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Measuring ____________________ can be used to test the purity of some
substances.
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12.
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If a
spoon gets hot quickly when it is used to stir a pot of soup, it is probably made of
____________________.
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13.
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A
material used for electrical wiring would need to have good ____________________.
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14.
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____________________ is a process that could be used to separate dissolved particles
from the liquid in a solution.
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15.
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A(An)
____________________ change occurs when a material changes shape or size but the composition of the
material does not change.
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16.
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____________________ properties can be observed only when the substances in a sample
of matter are changing into different substances.
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17.
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Rust
forms because iron and oxygen are highly ____________________ elements.
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18.
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A
solid that forms and separates from a liquid mixture is a(an) ____________________.
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19.
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A
cake rises as it bakes because a chemical change causes ____________________ to be
produced.
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20.
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When
a metal changes color because it has been heated, a(an) ____________________ change occurred. When a
metal changes color because it has reacted with another substance, a(an) ____________________ change
occurred.
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