The abbreviations used in balanced symbol equations, to show if reactants or products are solid (s), liquid (l), gas (g) or dissolved in water (aq).
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Card 7
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A number which shows how strongly acidic or alkaline a solution is.
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Card 8
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A mixture of indicators that can change through a range of colours depending on the pH of a solution. Its colour is matched to a pH number using the pH scale.
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Card 9
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A salt is a compound formed when some or all of the hydrogen in an acid is replaced by a metal (or by an ammonium ion).
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Card 10
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The chemical reaction of an acid with a base in which they cancel each other out, forming a salt and water. If the base is a carbonate or hydrogen carbonate, carbon dioxide is also produced in the reaction.
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Card 11
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An insoluble solid formed by a reaction taking place in a solution.
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Card 12
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A liquid, containing free-moving ions, that is broken down by electricity in the process of electrolysis.
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Card 13
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Unreactive
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Card 14
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The reaction where oxygen is added to a substance (or when electrons are lost).
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Card 15
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An equation that describes reduction or oxidation, such as the reactions that take place at the electrodes during eletrolysis.
