Science Chapter 4

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Author:
NelsH
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293426
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Science Chapter 4
Updated:
2015-01-23 14:53:04
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science
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science
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  1. Matter
    Anything that has mass and takes up space.
  2. Pure Substance
    Matter that contains only one kind of particle.
  3. Mixture
    Matter that contains more than one kind of particle.
  4. Element
    A pure substance that cannot be broken down into simpler parts by chemical methods.
  5. Compound
    A pure substance made of two or more elements that are chemically combined.
  6. Physical Property
    A characteristic of a substance that can be observed and measured without changing the identity of the substance.e.g. colour, appearance, melting/boiling point, density
  7. Viscosity
    The measure of a substance's resistance to flow.
  8. Melting Point
    The temperature at which a solid turns into a liquid.
  9. Boiling Point
    The temperature at which a liquid turns into a gas.
  10. Solubility
    A measure of the ability of a substance to dissolve in another substance.
  11. Density
    The ratio of the mass of a substance to the volume it occupies.

    d=m/v
  12. Chemical Property
    • The ability of a substance to change (react) and form new substances.
    • e.g. reactivity with water, acids, oxygen, combustibility, toxicity
  13. Combustibility
    The ability of a substance to burn in air.
  14. Stability
    The ability of a substance to remain unchanged.
  15. Toxicity
    The ability of a substance to cause harmful effects to plants and animals.

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