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  The metric system is the international decimal system
(S.I.) of
weights and measures based upon the meter (length) and the kilogram (mass). The system is
devised so that liter of pure water at standard conditions has a mass of one kilogram, or one
milliliter of water has a mass of one gram. Additionally, one cubic centimeter of water
equals one
milliliter.
One should be able to instantly convert from one unit within the system to another. For
example, How many µL are in 1.5 ml? How many mg is 0.020 grams? etc.
Learn to reproduce the following tables:
Unit 
Abbreviation 
Equivalent to: 
Exponential notation 
Number
in a meter 
meter 
m 
1 m 
10^{0} 
1 
kilometer 
km 
1000 m 
10^{3} 
0.001 
centimeter 
cm 
0.01 m 
10^{2} 
100 
millimeter 
mm 
0.001 m 
10^{3} 
1000 
micrometer 
µm 
0.000001 m 
10^{6} 
1,000,000 
nanometer 
nm 
0.000000001m 
10^{9} 
1,000,000,000 
Angstrom* 
Å 
0.0000000001 
10^{10} 
10,000,000,000 
* Although it is a useful unit for measuring
interatomic distances, the Angstrom is not an official unit of the metric
system.
Unit 
Abbreviation 
Equivalent to 
Exponential notation 
Number in a gram 
kilogram 
kg 
1000g 
10^{3} 
0.001 
gram 
g 
1g 
10^{0} 
1 
milligram 
mg 
0.001g 
10^{3} 
1000 
microgram 
µg 
0.000001g 
10^{6} 
1,000,000 
nanogram 
ng 
0.000000001g 
10^{9} 
1,000,000,000 
picogram 
pg 
0.000000000001g 
10^{12} 
1,000,000,000,000 
femtogram 
fg 
0.000000000000001g 
10^{15} 
1,000,000,000,000,000 
Unit 
Abbreviation 
Equivalent to: 
Exponential notation 
Number in a liter 
liter 
L 
1 
10^{0} 
1 
deciliter 
dl 
0.01 L 
10^{2} 
10 
milliliter 
ml 
0.001 L 
10^{3} 
1000 
microliter 
µl 
0.000001 L 
10^{6} 
1,000,000 
nanoliter 
nl 
0.000000001 L 
10^{9} 
1,000,000,000 
picoliter 
pl 
0.000000000001
L 
10^{12} 
1,000,000,000,000 
femtoliter 
fl 
0.000000000000001
L 
10^{15} 
1,000,000,000,000,000 
