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GCSE
Gcse Chemistry
Acids, Bases And Salts
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Q.1
What is an acid?
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A substance that will neutralise an acid
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A substance that produces H+ ions when added to water
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A soluble base
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A chemical which changes colour when added to acids and alkalis
Q.2
What is an alkali?
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A substance that will neutralise an acid
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A substance that produces H+ ions when added to water
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A soluble base
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A chemical which changes colour when added to acids and alkalis
Q.3
A substance with a pH of 6 is...
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a weak acid
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a strong acid
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a weak alkali
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neutral
Q.4
Pick the correct equation for the reaction between hydrochloric acid and iron oxide.
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Hydrochloric acid + solid iron (III) oxide → iron (III) chloride solution + water
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Hydrochloric acid + iron (III) oxide → iron (II) chloride solution + water
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Hydrochloric acid + iron (III) oxide → iron (III) chlorate solution + water
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Sulfuric acid + iron (III) oxide → iron (III) chloride solution + water
Q.5
We can react an acid and an alkali together to produce a salt. The correct name for this type of chemical reaction is...
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combustion
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oxidation
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thermal decomposition
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neutralisation
Q.6
When an acid and an alkali react, a salt and water are formed. Pick the correct salt produced when ammonium hydroxide reacts with nitric acid.
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Ammonium chloride
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Ammonium nitrate
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Ammonium sulfate
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Ammonium phosphate
Q.7
Salts can also be made by reacting metals with acids. What gas is given off when a metal reacts with an acid?
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Oxygen
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Carbon dioxide
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Hydrogen
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Nitrogen
Q.8
Precipitation reactions occur when an insoluble salt is formed. Precipitation reactions can be used in industry to...
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remove some substances from waste water
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split large molecules into smaller ones
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remove unwanted impurities from metals
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remove metals from their ores
Q.9
A strong acid...
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turns universal indicator paper green
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has a high pH number
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is partially ionised in water
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is 100% ionised in water
Q.10
Pick the correct combination of definitions.
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Acid - proton acceptor Alkali - proton donor
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Acid - proton donor Alkali - proton acceptor
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Acid - proton giver Alkali - proton donor
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Acid - proton acceptor Alkali - proton acceptor
0 h : 0 m : 1 s
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