A forensic chemist is analysing a tiny smear of residue from a crime scene, which is suspected to contain a mixture of sodium and barium ions.
Explain why the chemist would use flame emission spectroscopy (flame photometry) rather than a manual flame test to identify both types of metal ions in this single small sample.
Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 127 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
