Define acid/ base/ alkali.
Acid: substance that dissolves in water to produce hydrogen ions
Base: metal oxide or hydroxide that reacts with an acid to produce salt & water only
Base: soluble base that dissolves in water to produce hydroxide ions
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What can acids react with and state the products for each reaction.
acid + reactive metal → salt + H2
acid + metal carbonate → salt + CO2 + H2O
acid + alkali → salt + H2O
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What can alkalis react with and state the products for each reaction.
alkali + acid → salt + H2O
alkali + ammonium salts → salt + NH3 + H2O
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State the difference between a strong & a weak acid.
strong acid ionise/ dissociate fully in water
weak acid ionise/ dissociate partially in water
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State the colour of methyl orange/ universal indicator at pH = 1/7/14.
methyl orange: red/orange/yellow
universal indicator: red/ green/ violet
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State the types of oxides and give examples of each.
basic oxides - most metal oxides (e.g. Na2O, MgO)
amphoteric oxides - ZnO, Al2O3, PbO
acidic oxides - most non-metal oxides (e.g. CO2, SO3)
neutral oxides - NO, CO, H2O
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