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Metric System
Science  Math in Science 
The metric system it the most universally used system of measurement in the world. Only three countries, including the United States, have yet to adopt the metric system as their official system of measurement. France was the first country to adopt the metric system in December of 1799. In 1960, the name was changed to the Systeme International d'Unites, or the International System of Units (SI system). The SI system is based on powers of ten and base units. A table of base units is shown below. The conversion factors based on powers of ten can be found under the Metric Prefixes link.
Quantity Measured 
Abbreviation  Base Unit  Symbol 
Length  L  meter  m 
Mass  m  kilogram  kg 
Time  t  second  s 
Temperature  T  kelvin  K 
Amount of Substance  n  mole  mol 
Electric Current  I  ampere  A 
SI Derived Units Useful In Chemistry
Volume  m^{3} 
Area  m^{2} 
Speed/Velocity  m/s 
Acceleration  m/s^{2} 
Wavenumber  m^{1} 
Standard US Measurements to Metric Units Conversion Factors
1 foot = 0.3048 meters
1 inch = 2.54 centimeters
1 mile = 1.609 kilometers
1 gallon = 3.785 liters
1 pound = 0.4535 kilograms
Concept Definition
Study the primary definition of this concept, broken into general, basic, and advanced English definitions. Also see the mathematical definition and any requisite background information, such as conditions or previous definitions.
General Science
A way of describing various scientific measurements in a universally recognized way.
Advanced
Information on the decimal system used in measuring area, volume, mass, weight, density, heat, temperature, light, electricity, magnetism, and a many other values.
Vocabulary
Learn important vocabulary for this concept, including words that might appear in assessments (tests, quizzes, homework, etc.) that indicate the use of this concept.
Term  Context 
Computer Animations
Experience computer simulators or animations that illustrate the concept discussed here. Many simulators or animations come with worksheets for use in class.
http://www.quia.com/rr/30535.html?AP_rand=959892586 
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