Chapter #4: Glossary Terms

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  1. Matter
    Anything that has mass and takes up space. All matter is made up of tiny particles. 

    Examples: wood, air, and water.

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  2. Pure substance
    A pure substance contains only one kinda of particle, and cannot be broken down any further. They can either be elements or compounds. 

    Examples: gold, nitrogen, oxygen, and water.
  3. Mixture
    A mixture contains more than one kind of particle and can be seperated by physical methods. They share the same space. They can either be solutions or mechanical mixtures. 

    Examples: steal, brass, bronze and pop.
  4. Element
    An element is a pure substance that cannot be broken down into simpler parts and still be the same.

    For example, elements on the periodic table of elemnts such as lithium, helium, and sodium.

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  5. Compound
    • A compund is a pure substance that is made of two or more different elements that are chemically combined
    • For example:

    • ~water H20
    • ~carbon dioxide CO2
    • ~glucose C6H12O6

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  6. Physical property
    A physical property is a characteristic of a substance that can be observed and measured without changing the identity of the substance.

    They can either be qualitive, which is a property that can be observed and described without detailed measurement.

    Or they can be quantative, which is a porperty that can be measured and assigned a particular value.

    Quantative properties are often distinctive, to a particular element or compound.
  7. Viscosity
    Viscosity is the resistance to flow.
  8. Melting point
    The melting point is the temperature of melting. For example the melting point of iron is 1538° C.
  9. Boiling point
    The boiling point is the temperature of boiling. For example the boiling point of water is 99.98° C.
  10. Solubility
    Solubility is the ability of a substance to dissolve into another substance. 
  11. Density
    Density is the ratio of mass to volume.

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  12. Chemical property
    Chemical property describes the behaviour of a substance as it reacts with another substance to form one or more new substances. 
  13. Combustibility
    Combustibility is the ability of a substance to react rapidly with oxygen to produce carbon dioxide.

    Example: propane is used as a fuel to cook and heating air or in hot air ballons.

    • The WHMIS symbol for combustible:
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  14. Stability
    Stability is the ability of a substance to remain unchanged.
  15. Toxicity
    Toxicity is the ability of a substance to cause harmful effects in plants and animals.

    • The WHMIS symbol for toxic:
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Chapter #4: Glossary Terms
2013-01-30 22:53:04

Chapter 4 Glossary Terms
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