Moles and Atomic Structure

Thundorz
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Thundorz
Created by Thundorz almost 6 years ago
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OCR A Level Chemistry

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Moles and Atomic Structure
  1. Atom Types
    1. Ions: Charged particles.
      1. Isotopes: Different number of neutrons.
      2. Relative Masses
        1. Relative Atomic Mass: WeIghted mean mass of an atom of an element compared with 1/12 the mass of a C-12 atom.
          1. Relative Isotopic Mass: Mass of an atom of an isotope compared with 1/12 the mass of a C-12 atom.
            1. Relative Molecular Mass: Weighted mean mass of a molecule compared with 1/12 the mass of a C-12 atom.
              1. Relative Formula Mass: Weighted mean mass of a formula unit compared with 1/12 the mass of a C-12 atom.
              2. Formulae
                1. Empirical Formula: Smallest whole-number ratio between atoms of different elements in a compound.
                  1. Molecular Formula: Actual number atoms of each element in a molecule.
                  2. Moles
                    1. Avagadro Constant: 6.02x10^(23) atoms per mole
                      1. n=cV OR n=(cV)/1000
                        1. n=V/24 OR n=V/24000
                          1. N=m/Mr
                            1. Concentration
                              1. Concentrated: Large amount (>10mol(dm)^3) of solute per (dm)^3.
                                1. Dilute: Small amount (<10mol(dm)^3) of solute per (dm)^3.
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