Chemistry - Amount of Substance

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  • Created by: Perri
  • Created on: 17-03-10 17:44
  • Relative atomic mass if the average mass of an atom of an element compared to 1/12th the mass of one atom of carbon-12.
  • Relative molecular mass is the sum of the relative atomic masses in a molecule.
  • Relative formula mass is the sum of the atoms in a formula unit of an ionic compound.


  • A mole contains 6.023 x 10 to the power of 23 particles.
  • An empirical formula gives the simplest ratio of atoms

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