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10 Cards in this Set
- Front
- Back
Alkanes
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Hydrocarbons that contain only "single" bonds
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The number of hydrogen molecules in a straight chain alkane
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# of H = 2 x # of C + 2
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Matter usually occurs as
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mixtures
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Heterogeneous Mixture
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A mixture with visible boudaries between the components, and therefore does not have a uniform composition.
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Homogeneous Mixture
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Also known as a solution, it has no visible boundaries , and its composition is uniform. A mixture of sugar dissolved in water is homogeneous.
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Mixtures are different from compounds in three major ways:
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The proportions of the components can vary, The individual properties of the components are observable, and the components can be separated by physical means.
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Filtration
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Based on differences in particle size, and is often used to separate a solid from a liquid.
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Crystallization
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Based on differences in solubility.
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Distillation
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Separates components through volatility, the tendency of a substance to become a gas.
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Chromatography
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Also based on differences in solubility.
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