key definitions

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isotope
atoms of the same element with different numbers of neutrons
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relative isotopic mass
the mass of an atom of an isotope compared with one twelfth of the mass of an atom of carbon-12
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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
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the empirical formula
the simplest whole number ratio of atoms of each element present in a compound
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stoichiometry
the molar relationship between the relative quantities of substances taking part in a reaction
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an acid
a species that is a proton donor
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a base
a species that is a proton acceptor
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an alkali
a type of base that dissolves in water forming hydroxide ions, OH- ions
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a salt
any chemical compound formed from an acid when a H+ ion from the acid has been replaced by a metal ion or another positive ion, such as the ammonium ion NH4+
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anhydrous
a substance that contains no water molecules
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oxidation number
a measure of the number of electrons that an atom uses to bond with atoms of another element.
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Card 2

Front

the mass of an atom of an isotope compared with one twelfth of the mass of an atom of carbon-12

Back

relative isotopic mass

Card 3

Front

the weighted mean mass of an atom of an element compared with one twelfth of the mass of an atom of carbon-12

Back

Preview of the back of card 3

Card 4

Front

the simplest whole number ratio of atoms of each element present in a compound

Back

Preview of the back of card 4

Card 5

Front

the molar relationship between the relative quantities of substances taking part in a reaction

Back

Preview of the back of card 5
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