Chemistry C3 Tests for Cations

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Flame tests for metal ions:

Lithium burns with a crimson-red flame

Sodium burns with yellow-orange flame

Potassium lilac flame

Calcium brick red

Barium green

Some metals form coloured precipitate with NaOH

Calcium, white precipitate

Copper, blue

Iron (11) sludgy green

Iron (111) reddish brown


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