chem 101 chapter 1
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Tro, Principles of Chemistry: A Molecular Approach<br />
18<br />
Classification of Pure<br />
Substances⎯⎯Compounds<br />
• Substances that can be decomposed are<br />
called compounds.<br />
ü <strong>chem</strong>ical combinations of elements<br />
ü composed of molecules that contain two or<br />
more different kinds of atoms<br />
ü All molecules of a compound are identical, so all<br />
samples of a compound behave the same way.<br />
• Most natural pure substances are<br />
compounds.