Quantitative Chemistry Edexcel GCSE

What colour is a Li+ ion in a flame?

• red

• yellow

• lilac

• blue-green

What colour is a Na+ ion in a flame?

• yellow

• red

• blue-green

• lilac

What colour is a K+ ion in a flame?

• red

• yellow

• lilac

• blue-green

What colour is a Cu²⁺ ion in a flame?

• red

• yellow

• lilac

• blue-green

What colour is a Ca²⁺ ion in a flame?

• Orange-red

• White

• blue-green

• lilac

What is the wire loop cleaned with between testing each flame test sample?

• HCl (hydrochloric acid)

• Platinum

• water

• NaOH (sodium hydroxide)

Which colour is the Fe²⁺ metal ion hydroxide precipitate?

• green

• brown

• blue

• white

Which colour is the Fe³⁺ metal ion hydroxide precipitate?

• green

• brown

• blue

• white

Which colour is the Cu²⁺ metal ion hydroxide precipitate?

• green

• brown

• blue

• white

Which colour is the Ca²⁺ metal ion hydroxide precipitate?

• green

• brown

• blue

• white