Moles and Atomic Structure

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

Resource summary

	Created by Thundorz over 9 years ago