AQA · Chemistry · 8462
GCSE Chemistry: Flame tests
Chemical analysis · AQA GCSE Chemistry (8462), specification point 4.8.3.1. Cards are generated from the exam board's own specification for "Flame tests", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.
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What type of ion can flame tests identify?
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Some metal ions (cations).
What flame colour do lithium compounds produce?
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Crimson.
What flame colour do sodium compounds produce?
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Yellow.
What flame colour do potassium compounds produce?
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Lilac.
What flame colour do calcium compounds produce?
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Orange-red.
What flame colour do copper compounds produce?
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Green.
Which metal ion gives a lilac flame in a flame test?
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Potassium (K⁺).
Which metal ion gives a crimson flame in a flame test?
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Lithium (Li⁺).
Which metal ion gives a green flame in a flame test?
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Copper (Cu²⁺).
Why can a flame test give unclear results for a mixture of ions?
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Some flame colours can be masked by others, so an ion's colour may not be seen.
In a flame test, calcium compounds produce an ? flame.
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orange-red
In a flame test, sodium compounds produce a ? flame.
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yellow
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