Observation(s) when concentrated sodium hydroxide is added to chromium hydroxide?

Observation(s) when cobalt(II) hexammine is left to stand in air?

Observation(s) when an excess of concentrated ammonia is added to aqueous copper ions?

Observation(s) when sodium is burned in air?

Observation(s) when dilute sulphuric acid is added to chromium hydroxide?

Colour of a solution of chromate(VI) ions?

Observation when hydrogen peroxide is added to a solution containing hexahydroxochromium(III) ions?

Observation when dilute sulphuric acid is added to a solution containing chromate(VI) ions?

Colour of a solution of dichromate(VI) ions?

Colour of a solution of chromium(II) ions?

Observation(s) when sodium carbonate is added to a solution containing aluminium ions?

Colour of cobalt carbonate?

Colour of copper carbonate?

Colour of iron carbonate?

Colour of a solution containing chromium(III) hexammine ions?

Colour of a solution containing cobalt(II) hexammine ions?

Observation(s) when magnesium is burned in air?

Colour of a solution containing cobalt(III) hexammine ions?

Colour of cobalt(II) hydroxide?

Colour of copper(II) hydroxide?

Colour of iron(II) hydroxide?

Colour of iron(III) hydroxide?

Colour of a solution containing chromium(III) ions?

Colour of a solution containing cobalt(II) ions?

Colour of a solution containing copper(II) ions?

Colour of a solution containing iron(II) ions?

Colour of a solution containing iron(III) ions?

Observation(s) when concentrated hydrochloric acid is added to a solution containing copper ions?

Observation(s) when concentrated hydrochloric acid is added to a solution containing cobalt(II) ions?

Observation(s) when iron(II) hydroxide is left to stand in air?

Observation(s) when cobalt(II) hydroxide is left to stand in air?

Observation(s) when a solution containing chromium(II) ions is exposed to air?

Observation(s) when ammonia is added to a solution containing iron(II) ions?

Observation(s) when ammonia is added to a solution containing iron(III) ions?

Observation(s) when sodium carbonate is added to a solution containing chromium(III) ions?

Observation when sodium carbonate is added to a solution containing cobalt(II) ions?

Observation(s) when magnesium is reacted with steam?

Observation(s) when sodium carbonate is added to a solution containing copper ions?

Observation(s) when sodium carbonate is added to a solution containing iron(III) ions?

Observation(s) when sodium hydroxide is added dropwise to a solution containing chromium(III) ions?

Observation(s) when sodium hydroxide is added to a solution containing cobalt(II) ions?

Observation(s) when ammonia is added dropwise to a solution containing copper ions?

Observation(s) when sodium hydroxide is added to a solution containing copper ions?

Observation(s) when excess ammonia is added to copper(II) hydroxide?

Observation when sodium carbonate is added to a solution containing iron(II) ions?

Observation when sodium hydroxide is added to a solution containing dichromate(VI) ions?

Observation when sodium hydroxide is added to a solution containing iron(II) ions?

Observation when sodium hydroxide is added to a solution containing iron(III) ions?

Observation(s) when zinc and concentrated hydrochloric acid are added to a solution containing dichromate(VI) ions?

Observation(s) when sulphuric acid is added to cobalt(II) hydroxide?

Observation(s) when sulphuric acid is added to a solution containing copper(II) hydroxide?

Observation(s) when sulphuric acid is added to iron(II) hydroxide?

Observation(s) when sulphuric acid is added to iron(III) hydroxide?

Observation(s) when ammonia is added dropwise to a solution containing chromium(III) ions?

Observation(s) when excess ammonia is added to chromium(III) hydroxide?

Observation(s) when ammonia is added dropwise to a solution containing copper ions?

Observation(s) when white phosphorus is burned in air?

Observation(s) when ammonia is added dropwise to a solution containing cobalt(II) ions?

Observation(s) when excess ammonia is added to cobalt(II) hydroxide?

Observation when sulphuric acid is added to aluminium hydroxide?

Observation(s) when concentrated sodium hydroxide is added to aluminium hydroxide?

Observation(s) when magnesium is added to cold water?

Observation(s) when sodium is added to cold water?

Observation(s) when aluminium is burned in air?

Observation(s) when sodium hydroxide is added dropwise to a solution containing aluminium ions?

Observation(s) when sulphur is burned in air?

Colour of chromium(III) hydroxide?

Colour of aluminium hydroxide?

Colour of a solution containing aluminium ions?

Observation(s) when ammonia is added to a solution containing aluminium ions?

Colour of a solution of manganese(II) ions?

Colour of a solution of manganate(VII) ions?