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19 Cards in this Set
- Front
- Back
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What are acids?
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Substances with pH7.0 or less
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What are bases?
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Metal oxides that can neutralise acids producing salts and water
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What are alkalis?
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Bases that are soluble in water (some metal hydroxides)
Have a pH bigger than 7.0 |
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What is a concentrated acid?
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An acid with less water in it than a dilute acid
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What must be present for a substance to act as an acid or as a base?
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Water
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What do acids in aqueous solutions produce?
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H⁺(aq) ions
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What do alkalis in aqueous solutions produce?
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OH⁻ ions
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What do H⁺(aq) (hydrogen) ions do to solutions?
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Make them acidic
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What do hydroxide (OH⁻ (aq)) do to solutions?
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Make them alkaline
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When put together what do hydrogen and hydroxide ions makes?
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Water
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What can an acid be defined as?
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A proton donor
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What can a base be defined as?
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proton acceptor
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What is a strong acid or alkali in relation to water?
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100% ionised in water
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Give 3 examples of strong acids.
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Hydrochloric, sulphuric & nitric acid
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Give 2 examples of strong alkalis.
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Sodium & potassium hydroxide
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What is a weak acid or alkali in relation to water?
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Partially ionised in water
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Give 3 examples of weak acids.
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Ethanoic, citric and carbonic acid
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Give 2 examples of weak alkalis.
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Ammonia solution and sodium hydrogen carbonate
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How do strong acids react with magnesium ribbon?
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Quickly
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