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Key Definitions

Chemistry Stuff

Isotopes Atoms of the same element with a different number of neutrons.
Atomic Number Number of protons in the nucleus of an atom.
Mass Number Total number of protons and neutrons.
Ion Positively or negatively charge atom or group of atoms.
Relative Isotopic Mass Mass of an atom of an isotope compared with 1/12 of the mass of a carbon-12 atom.
Relative Atomic Mass Mean weighted mass of an atom of an element compared to 1/12 the mass of a carbon-12 atom.
Avogardo Constant Number of atoms per mole of the carbon-12 isotope (6.02 x 10^23 mol)
Mole Amount of any substance containing the same amount of particles as 12g of the carbon-12 isotope.
Molar Mass Mass of a substance per mole of a substance (measured in g mol^-1)
Empirical Forrmula The simplest whole number ratio of atoms of each element in a compound.
Water Of Crystalisation .XH2O
Created by: TwoDoorBicycle



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