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Edexcel IGCSE Chemistry 2.46 Ammonium ion test

Edexcel IGCSE Chemistry 2.46 Ammonium ion test
Edexcel IGCSE Chemistry syllabusChemistry 4CH1First assessment 2019

Practise using flame-test colours to identify metal cations from observations, formulae and short multiple-choice options.

How this is tested

  • identify Li+, Na+ and K+ from red, yellow and lilac flame colours
  • link a stated flame colour to the correct ion formula,

Question 2(d)

[Maximum number: 1]

A small piece of lithium is added to a trough of water.

Lithium ions can be identified using a flame test.

What flame colour indicates the presence of lithium ions?

A

lilac

B

orange

C

red

D

yellow