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Sodium (Na⁺)
Produces a yellow flame.
Potassium (K⁺)
Produces a lilac flame.
Calcium (Ca²⁺)
Produces a brick-red flame.
Copper (Cu²⁺)
Produces a green flame or a blue precipitate.
Iron (Fe²⁺)
Forms a green precipitate.
Iron (Fe³⁺)
Forms a brown precipitate.
Ammonium (NH₄⁺)
Releases ammonia gas that turns red litmus blue.
Chloride (Cl⁻)
Forms a white precipitate.
Bromide (Br⁻)
Forms a cream precipitate.
Iodide (I⁻)
Forms a yellow precipitate.
Sulfate (SO₄²⁻)
Forms a white precipitate.
Carbonate (CO₃²⁻)
Causes effervescence and limewater to turn cloudy.
Nitrate (NO₃⁻)
Produces ammonia gas.