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Units of Measurement

SI units - set of 7 basic units from which all other units are derived  

  • kilogram (kg) - measures mass (amount of material in an object)
  • meter (m) - length
  • second (sa) - time
  • Kelvin (K) - temperature, where 0° is absolute zero; 273.15 more than Celsius
  • mole (mol) - amount of a substance
  • ampere (A) - electric current
  • candela (cd) - luminosity

prefixes of metric system  

  • Giga (G) - 109
  • Mega (M) - 106
  • Kilo (k) - 103
  • Deci (d) - 10-1
  • Centi (c) - 10-2
  • Milli (m) - 10-3
  • Micro (µa) - 10-6
  • Nano (n) - 10-9
  • Pico (p) - 10-12
  • Femto (f) - 10-15

derived SI units - uses a combination of SI units  

  • volume - measured by cubic meter or liter (equal to cubic decimeter)
  • density - amount of mass per unit volume; mass/volume
Subject: 
Chemistry
Subject X2: 
Chemistry

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