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Module 1 Definitions
Atomic structure The number of protons in the nucleus of an atom.

Mass number The total number of protons and neutrons in the nucleus of an atom.

Relative atomic mass The average mass of an atom of an element relative to 1/12 of
the mass of carbon12.…

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Molecular formula A formula which shows the actual number of atoms of each element
in a molecule.

Molar gas volume The volume of one mole of gas under specified conditions of
temperature and pressure. (eg 24dm3, 20oC and 1 atm pressure).

Covalent bond A shared pair of electros between two…


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