Unformatted text preview: eterogeneous mixtures are not uniform in composition. And indeed the individual particles of their
components can often be seen by the unaided eye. For example, when preparing home-made ice cream, you use a
mixture of ice and rock salt. This is a heterogeneous mixture. The individual chunks (particles) of ice and salt
are clearly visible, and the particles are so large, they are not evenly dispersed. The composition of this mixture
varies from place to place within the mixture itself. Natural air is actually a heterogeneous mixture. It consists
of nitrogen, oxygen, and argon gases, but also contains solid particles of pollen and dust. Any mixture, whether
it be homogeneous or heterogeneous, can be separated into its pure components by physical means.
Properties of Matter. Physical properties are those properties that can be measured and observed without
changing the identity or composition of the substance. Physical properties include color, hardness, solubility,
density, specific heat, melting point, and boiling point. P...
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This note was uploaded on 09/15/2009 for the course CHEM 102 taught by Professor Bastos during the Spring '08 term at Adelphi.
- Spring '08