Properties of Matter

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Chapter 1.3

• Properties of Matter

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Intensive Properties

• Independent of the amount of the sample
• Used for Identification
• Examples temperature, melting point, density

3
Extensive Properties

• Dependent on the amount of sample
• Used to determine quantity
• Examples mass, weight, volume

4
Physical Changes

• Changes to the appearance of a substance
• Not composition changes
• Examples States of matter changes

5
Chemical Changes

• Reactions
• Transformation into a chemically different
  substance
• Examples 2H O ? H2O

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Separation of Mixtures

• Recall that each component retains chemical
  composition
• This allows for various separation methods

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Filtration

• Solid from liquid separation
• Uses porous medium
• Example Filter paper

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Filtration Apparatus
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Distillation

• Homogenous mixture separation
• Ability of components to form gases
• Example Salt water ?Salt Pure Water

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Distillation Apparatus
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Chromatography

• Writing of Colors
• Separation by differing abilities of substances
  to adhere to various surface solids
• Paper, starch
• Example ink separation by paper chromatography

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Chromatography Image