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    Introductory Chemistry Quiz
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Salt water is a both a homogeneous mixture and an ____ solution. 94
Solid nonmetals are brittle, whereas metals are ____. acidic
An ____ reaction absorbs heat energy and thus will feel cold. aqueous
A molecule of water is polar because it has a ____ structure. bent
Glass, rocks, oils, and plastics are water ____. endothermic
There are ____ naturally occurring elements on Earth. exothermic
A solution with a pH less than 7 is ____. insoluble
An ____ reaction releases heat energy and thus will feel hot. malleable

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