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Formulae, Equations and amounts of substances Summary Sheet

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Unit AS 1 - Basic Concepts in Physical and Inorganic Chemistry
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Formulae, Equations and Amounts of substances Summary Sheet

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Formulae, equations and amounts of substance
Sulfate Phosphate
Sulfite Chlorate
Thiosulfate Hypochlorite
Hydrogensulfate Hydroxide
Hydrogencarbonate Dichromate
Carbonate Chromate
Nitrate Permanganate
Nitrite Ammonium


Ionic Equations: Spectator ions not involved in equation, charge must be equal on both sides

RAM: Average (weighted mean) mass of an atom of an element relative to one-twelfth of the mass
of the mass of an atom of carbon-12

RFM: Substitute ‘atom’ for ‘species’ RMM: Substitute ‘atom’ for ‘molecule’

Molar mass: mass of 1 mole of a substance units: g/mol or gmol⁻1

Avogadro Constant: the number of atoms in 12g of carbon-12/ 6.02 x 10‸2323

Mole: Amount of a substance that contains the Avogadro Constant number of atoms, molecules or
groups of ions.



Mass (g) Moles

Moles x RAM Vol. (dm3) x Conc. (moldm-3)



Number of particles

Moles x Avogadro’s Constant



Hydrated salt: One that contains water of crystallisation

Water of crystallisation: Water chemically bonded within a crystal structure
Connected book
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Dr Wingfield Glassey, Dr Wingfield Glassey Chemistry for CCEA AS Level
Publisher: Unknown ISBN: 9781780731018 Edition: Unknown

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Formulae, equations and amounts of substances
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