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Chem 111 Quiz 1
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SI Units
____ --> Meter,m.
Mass --> ____
Temp --> ____
Time --> _____
length
kilogram, kg
kelvin, k
second, s
____ : std quantities to specify a measurment.
Units
Enery: _________
Capacity to do work
_____: force acting over a distance
Work
Density
formula:
given in units of:
1___=1___
mass/volume
g/mL or g/cm
3
or kg/L
3
mL, cm
3
SI Prefixes
giga 10
?
___ 10
6
___ 10
3
Deci 10
?
Centi 10
?
____ 10
?
____ 10
-6
Nano 10
?
____ 10
-12
9, mega, kilo, -1, -2, mili -3, micro, -9, pico
Unit Conversions
1 lb= ___ g
1 kg= ___ lb
1 oz= ___ g
1 in= ___ cm
1 gal= ___ L
1 cm
3
= ___ mL
453.6g
2.205 lb
28.35 g
2.54 cm
3.785 L
1 mL
Correct # Sig Figs:
1. 0.04550 m
2. 61200 m
3. 3.0014 km
4. 10 dm=1m
5. 3.000x10
-5
s
1.
0.0
4550
m
2. 6.12x10
4
m
3.
3.0014
4. none b/c its a defined quantity
5.
3.000
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
Trailing zeros ____ a decimal are always significant.
Trailing zeros ____ a decimal are ambiguous.
after
before
Physcial Change: ___________
Chemical Change: __________
appearence changes but not composition.
chemical composition of the compound is altered.
Matter:
is composed of atoms.
Molecule:
2 joined atoms
What are atoms?
The building blocks of matter
What is chemistry? the study of
matter, its properties and interactions
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Author
tbby5065
ID
62262
Card Set
Chem 111 Quiz 1
Description
Chem 111
Updated
2011-01-27T01:48:01Z
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