Properties of Matter

  • Extensive Properties: property which depends on the amount of a substance present.
    • Examples: mass, volume, length
  • Intensive Properties: property which does not depend on the amount of a substance present.
    • Examples: color, smell, hardness, density, physical state, boiling point, melting point, freezing point.
  • Chemical Properties: properties which are measured or observable by changing the chemical composition or identity of a substance. Changes in color, generation of heat, precipitate formation, and gas generation are chemical changes which in turn change chemical properties.
    • Examples: flammability, combustibility, corrosivity, oxidation.
    • Chemical Changes “buzzwords”: burning, reacting, rusting, oxidizing.
  • Physical Properties: properties that are measured or observable by not changing the chemical composition or identity of a substance.
    • Example: color, mass, volume, density, hardness, physical state, temperature (melting point, boiling point, freezing point).
    • Physical Changes “buzzwords”: tearing, pouring, boiling, freezing, melting, measuring
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