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Atoms

TermDefinition
Relative Isotopic Mass The mass of an atom of an isotope compared with one-twelfth of the mass of an atom of carbon-12
Relative Atomic Mass The weighted mean mass of an atom of an element compared with one-twelfth of the mass of an atom of carbon-12
Relative Molecular Mass The weighted mean mass of a molecule compared with one-twelfth of the mass of an atom of carbon-12
Relative Formula Mass The weighted mean mass of a formula unit compared with one-twelfth of the mass of an atom of carbon-12
Amount of Substance The quantity whose unit is the mole. Chemists use amount of substance as a means of counting atoms
The Avogadro Constant Ther number of atoms per mole of the carbon-12 isotope (6.02*10^23)
A Mole The amount of any substance containing as many particles as there are carbon atoms in exactly 12g of the carbon-12 isotope
Molar Mass The mass per mole of a substance
Empirical Formula The simplest whole number ratio of atoms of each element present in the compound
Molecule A small group of atoms held together by covalent bonds
Molecular Formula The actual number of atoms of each element in a molecule
Created by: stu035847
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