Classification of matter
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Classification of Matter. Matter. Mixture. Pure Substance. Homogeneous (solution). Heterogeneous (mechanical mixture). Element. Compound. Classification of Matter (Alternate). Matter. Homogeneous. Heterogeneous. Mixture. Pure Substance. Element. Compound. Physical properties.

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Classification of Matter

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Classification of Matter



Pure Substance

Homogeneous (solution)

Heterogeneous (mechanical mixture)



Classification of Matter (Alternate)





Pure Substance



Physical properties

  • A physical property is any aspect of matter that can be measured or seen without changing the composition of the matter.

  • Qualitative

    • Odor, color, texture, state, malleability

  • Quantitative

    • Melting point, boiling point, density, mass

Physical Change

  • Does not change the composition of the matter - doesn't change what the substance is

  • In a mixture, individual components retain properties of the original mixture; e.g. dissolving salt in water

    • Change of state (melting, freezing, etc.) is an example of a physical change

Physical Separation

  • Separating a mixture based on physical properties

  • Involves a physical change only (not chemical)

  • Individual components have properties of the mixture

  • Examples:

    • Filtration

    • Using magnetic properties

    • Sedimentation, using density differences

Chemical Properties

  • A chemical property is any property of matter that becomes evident during a chemical reaction.

  • Can only be measured by changing a substance's chemical identity.

  • Chemical properties cannot be determined just by viewing or touching the matter.

Chemical Change

  • A new substance is formed and energy is either given off or absorbed

  • Involves energy

    • If heat is given off during the reaction, than the reaction is considered to be exothermic.

    • If heat is required for the reaction, than the reaction is considered to be endothermic.

  • Composition of the substance is altered

  • New substances are produced with properties different from the original substance

  • Not easily reversed

Evidence of Chemical Change

  • The following may indicate that a chemical change has occurred

    • Colour Change

    • Temperature Change

    • Odour Given Off

    • Precipitate is Formed

    • Gas Produced

    • Any new substance produced

  • Examples

    • Burning

    • Metal in acid

    • Electrolysis of water

Chemical Separation

  • Separating a substance using a chemical change

  • Can be used to separate compounds

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