Testing for gases and ions

This ion produces a crimson red flame

• Na⁺

• Li⁺

• Ca²⁺

• K⁺

This ion produces a lilac flame

• Na⁺

• Ca²⁺

• K⁺

• Ba²⁺

This ion produces a blue-green flame

This ion produces a yellow flame

This ion produces a red flame

• Ca²⁺

• Na⁺

• Ba²⁺

• Cu²⁺

This ion produces an apple-green flame

• Cu²⁺

• K⁺

• Ca²⁺

• Ba²⁺

This gas turns limewater (calcium hydroxide) cloudy/milky

• Sulphur dioxide

• Hydrogen

• Carbon dioxide

• Oxygen

This halide produces a white precipitate when silver nitrate is added

• chloride

• bromide

• iodide

This halide produces a cream precipitate when silver nitrate is added

• chloride

• bromide

• iodide

This halide produces a yellow precipitate when silver nitrate is added

• chloride

• bromide

• iodide