AS Chemistry EL CI 1.1

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  • Created by: A.B.
  • Created on: 22-10-13 18:56
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  • EL Amount of Substance CI 1.1
    • Avogadro Constant
      • Symbol N
      • Number of particles in 1 mole of a substance
      • 6.02 x 10
    • Relative Atomic Mass
      • A
      • Number of times an atom of an element is heavier than one twelfth of an atom of  C (mass relative to carbon 12)
      • These values have no units
      • Expected to 1 decimal place
        • Relative Formula Mass
          • M
          • Sum of relative atomic masses (A ) for each atom in the formula
          • Also called Relative Molecular Mass
          • These values have no units.
    • Relative Formula Mass
      • M
      • Sum of relative atomic masses (A ) for each atom in the formula
      • Also called Relative Molecular Mass
      • These values have no units.
    • Mole
      • To obtain 1 mole, weigh out A  or M
      • Number of particles in 1 mole of a substance
    • Empirical Formula
      • Simplest ratio  of atoms of each element in a compound.
    • Molecular Formula
      • Actual number of atoms of each element in a molecule.
      • Either same as or a whole number multiple of the empirical formula

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