CHEM CH1

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Author:
purplerubycrystal
ID:
129368
Filename:
CHEM CH1
Updated:
2012-01-21 13:45:29
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CHEM CH1
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CHEM CH1
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  1. What percentage of the air we breath is made up of 02?
    21%
  2. ...the 4 elements in phosphoric acid:
    • sodium
    • chlorine
    • oxygen
    • phosphorus
  3. ...contains only one type of element or compound and has a fixed chemical composition:
    pure substance
  4. ...physical state, color, viscosity, opacity, density, conductivity, mealting and boiling points:
    physical properties
  5. ..the temperature at which a solid is converted to a liquid:
    mealting point
  6. ...as energy is removed, the point of conversion of liquid to solid...
    freezing point
  7. ...point of conversion of liquid to gas:
    boiling point
  8. is it possible to solidify helium?
    no
  9. substance made of 2 or more elements or compounds that have not reacted chemically:
    mixture
  10. ...the physical and chemical properties of a mixture depend in the composition (proportions) of the mixture... T or F?
    T
  11. ...# of SI base units:
    7
  12. Length/symbol
    Meter/m
  13. Mass/Symbol
    Kilogram/kg
  14. Time/Sym
    Second/s
  15. Electric current/sym
    Amphere/A
  16. Temperature/sym
    Kelvin/K
  17. Amount of Substance/sym
    Mole/mol
  18. Luminosity/sym
    Candela/cd
  19. Volume sym
    m3
  20. Density sym
    kg/m3
  21. Energy sym (word)
    J (joule)
  22. 8 Common Metric Prefixes/abbr/factor in
    • mega/M/105
    • kilo/k/103
    • deci/d/10-1
    • centi/c/10-2
    • milli/m/10-3
    • micro/u/10-5
    • nano/n/10-9
    • pico/p/10-12

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