What gas turns limewater cloudy?

What gas bleaches damp blue litmus paper (it may go red first)?

What gas relights a glowing splint?

What gas makes a squeaky pop when it comes into contact with a lit splint?

What gas turns damp red litmus paper blue and has a strong smell?

Which metal ion is being burned?

Which metal ion is being burned?

Which metal ion is being burned?

Which metal ion is being burned?

Which metal ion is being burned?

What colour do Li⁺ ions burn?

What colour do Na⁺ ions burn?

What colour do K⁺ ions burn?

What colour do Ca²⁺ ions burn?

What colour do Cu²⁺ ions burn?

What colour precipitate do we get when we add sodium hydroxide solution to copper (II) ions?

What colour precipitate do we get when we add sodium hydroxide solution to iron (II) ions?

What colour precipitate do we get when we add sodium hydroxide solution to iron (III) ions?

What do we use to test for carbonates?

What do we use to test for sulphates?

What is produced when testing for sulfates with hydrochloric acid and barium chloride?

What is used to test for halides? (Cl⁻, Br⁻, I⁻)

What colour precipitate does chlorine give when added to dilute nitric acid, followed by silver nitrate solution?

What colour precipitate does bromine give when added to dilute nitric acid, followed by silver nitrate solution?

What colour precipitate does iodine give when added to dilute nitric acid, followed by silver nitrate solution?

What colour does copper (II) sulphate turn in the presence of water?

What colour does copper (II) sulphate turn when water is not present?