Mrs. Bailey - Ch 2. Vocab

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HCNerd
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31958
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Mrs. Bailey - Ch 2. Vocab
Updated:
2010-08-30 21:29:31
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Vocab
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Ch.2
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  1. Matter
    anything that has mass and takes up space
  2. mass
    a measure of the amount of matter that an object contains
  3. chemical change
    a change that produces matter with a diffrent composition then the original matter.
  4. physical change
    a change during which some properties of a material change but the composition of the material doesnt change
  5. element
    the simplest form of matter that has a unique set of properties
  6. compound
    a sunbstance that contains two or more elements chemically combined in a fixed proportion
  7. solid
    hard surface ; atoms are tightly packed together.
  8. liquid
    wet surface: atmons are loose enough to move around
  9. gas
    contains no surface: atoms move quickly around in to determined path
  10. mixture
    a blend of two or more substances that arent chemically combined
  11. homogenous
    mixture uniform in composition
  12. heterogenous
    mixture that is not uniform in composition
  13. reactant
    a substance that is present at the start of a reaction.
  14. product
    a substance produced in a chemical reaction
  15. chemical property
    ability of a substance to undergo a specific chemical change
  16. physical property
    a quality or condition of a substance that can be observed or measured without changing the substances composition
  17. solution
    homogenous mixture
  18. phase
    any part of a sample with uniform composition and properties
  19. precipitate
    a solid that forms and settles out of a liquid mixture
  20. volume
    a measure of the space occupied by a sample of matter
  21. law of conservation of mass
    in any physical change or chemical reaction, mass is conserved

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