Properties of Matter

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Properties of Matter

• Active Chemistry

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ChemSaver p. 12 Properties are

• Words that describe matter (adjectives)
• Physical Properties- a property that can be
  observed and measured without changing the
  materials composition.
• Examples- color, hardness, m.p., b.p.
• Chemical Properties- a property that can only be
  observed by changing the composition of the
  material.
• Examples- ability to burn, decompose, ferment,
  react with, etc.

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Physical vs. Chemical Change

• Physical change will change the visible
  appearance, without changing the composition of
  the material.
• Boil, melt, cut, bend, split, crack
• Is boiled water still water?
• Can be reversible, or irreversible
• Chemical change - a change where a new form of
  matter is formed.
• Rust, burn, decompose, ferment

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Properties of Matter

• Observable properties of matter fall into two
  catergories.
• 1. An intensive property is a property that
  depends on the type of matter in a sample, not
  the amount of matter.
• boiling point water boils at the same
  temperature no matter if you have 1 gram, 10
  grams or 100,000 kilograms of water
• 2. An extensive property is a property that
  depends on the amount of matter in a sample
• volume 100 grams of water takes up more volume
  than 1 gram of water.

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Extensive Properties
2.1

• Depends on the amount of matter in the sample
• Mass
• Volume
• Calories
• Concentration
• Weight

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Intensive Properties
2.1

• Depends on the type of matter, not the amount
  present
• Hardness
• Density
• Solubility
• Luster
• Taste
• Color

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More Intensive Properties
2.1

• Reactivity
• Malleability
• Conductivity
• Flammability
• Boiling/Condensation Point
• Melting/ Freezing Point

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Intensive vs. Extensive Properties
2.1

• Will all samples of the same substance have the
  same extensive properties?
• No. Extensive properties depend on the AMOUNT of
  matter, not what the matter is composed of.
• Will all samples of the same substance have the
  same intensive properties?
• Yes. Intensive properties depend on what the
  matter is composed of.

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Classify each of the following as an intensive
property or an extensive property.

• 1. Mass
• 2. Density
• 3. Volume
• 4. Melting point
• 5. Length
• 6. Color

1. Extensive 2. Intensive 3. Extensive 4.
Intensive 5. Extensive 6. Intensive