Chapter 4 Chemistry and Chemical Compounds

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Chapter 4 Chemistry and Chemical Compounds
2015-11-22 12:04:11

4.1& 4.2& 4.3
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  1. Matter
    Anything that has mass and occupies 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 different 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.
  7. Qualitative Physical Property
    can be observed and described without detailed measurement.
  8. Qualitative Physical Properties
    Colour, Odour State of matter, texture, lustre, malleability.
  9. Quantitative physical property
    can be measured and assigned a particular value.
  10. Quantitative Physical Properties
    Viscosity, Melting Point, Boiling Point, Solubility, Hardness, Conductivity, Density
  11. Viscosity
    Resistance to flow
  12. Solubility
    a measure of the ability of a substance to dissolve another substance.
  13. Hardness
    Ability to scratch another material.
  14. Conductivity
    Ability of the material to conduct electricity or heat.
  15. Density
    ratio of volume to mass.
  16. Melting Point
    The temperature at which a solid turns into a liquid.
  17. Boiling Point
    The temperature at which a liquid turns into a gas.
  18. Chemical property
    the ability of a substance to react (change) with another substance and form new substances.
  19. Chemical Properties
    Reactivity with water, reactivity with oxygen, reactivity with acids, reactivity with another substance.
  20. Combustibility
    the ability of a substance to burn in the air.
  21. Stability
    The ability of a substance to remain unchanged.
  22. Toxicity
    the ability of a substance to cause harmful effects in plants and animals.