Chem 111 Quiz 1

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tbby5065
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62262
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Chem 111 Quiz 1
Updated:
2011-01-26 20:48:01
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Chem Quiz
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Chem 111
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  1. SI Units
    ____ --> Meter,m.
    Mass --> ____
    Temp --> ____
    Time --> _____
    • length
    • kilogram, kg
    • kelvin, k
    • second, s
  2. ____ : std quantities to specify a measurment.
    Units
  3. Enery: _________
    Capacity to do work
  4. _____: force acting over a distance
    Work
  5. Density
    formula:
    given in units of:
    1___=1___
    • mass/volume
    • g/mL or g/cm3 or kg/L3
    • mL, cm3
  6. SI Prefixes
    giga 10?
    ___ 106
    ___ 103
    Deci 10?
    Centi 10?
    ____ 10?
    ____ 10-6
    Nano 10?
    ____ 10-12
    9, mega, kilo, -1, -2, mili -3, micro, -9, pico
  7. Unit Conversions
    1 lb= ___ g
    1 kg= ___ lb
    1 oz= ___ g
    1 in= ___ cm
    1 gal= ___ L
    1 cm3= ___ mL
    • 453.6g
    • 2.205 lb
    • 28.35 g
    • 2.54 cm
    • 3.785 L
    • 1 mL
  8. Correct # Sig Figs:
    1. 0.04550 m
    2. 61200 m
    3. 3.0014 km
    4. 10 dm=1m
    5. 3.000x10-5s
    • 1. 0.04550 m
    • 2. 6.12x104m
    • 3. 3.0014
    • 4. none b/c its a defined quantity
    • 5. 3.000
  9. Sig Fig's in Calculations
    _________: lowest # sig figs in calculation are in the answer.
    Subtraction/addition: ________________.
    • Multiplication/Division
    • result is same as one w/ fewest # decimal places
  10. Trailing zeros ____ a decimal are always significant.
    Trailing zeros ____ a decimal are ambiguous.
    • after
    • before
  11. Physcial Change: ___________
    Chemical Change: __________
    • appearence changes but not composition.
    • chemical composition of the compound is altered.
  12. Matter:
    is composed of atoms.
  13. Molecule:
    2 joined atoms
  14. What are atoms?
    The building blocks of matter
  15. What is chemistry? the study of
    matter, its properties and interactions

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