3.3
TRANSCRIPT
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3.3 Mixtures of Matter
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Mixtures
• Combination of 2 or more substances
• Mixed, not bonded together
• Can be separated physically
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Heterogeneous Mixture
• Not-even blending• Examples:
– OJ with pulp– Milk– Dirty water– Oil/vinegar salad
dressing– fog
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Homogenous Mixture
• Even blending• a.k.a. “solution”• Examples
– Gas-gas– Gas-liquid– Liquid-gas– Solid-liquid– Solid-solid
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Separating Mixtures
• Each based on some physical property– Size of particles– Solubility– Boiling point– Melting point– Conductivity– Magnetism– Etc.
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Filtration
• heterogeneous mixtures – sep. by size
• Best for solid in a fluid (liquid or gas)
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Distillation
• Good for homogeneous solutions (if components have different boiling points)
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Crystallization
• Form solid particles from a supersaturated solution
• Adding more substance to solution = crystals!
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Sublimation
• Only works for substances that do this (at different temperatures)
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Chromatography
• Size separation• Commonly used for
pigments
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15. Classify the following as heterogeneous or homogeneous
• A. tap water
• B. air
• C. raisin muffin
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17. Describe the separation technique that could be used
• A. two colorless liquids
• B. a nondissolving solid mixed with a liquid
• C. red and blue marbles of same size and mass