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Identification Of Ions By Chemical And Spectroscopic Means (chemistry Only) (GCSE Chemistry)

The following is a GCSE Chemistry test covering 'Identification Of Ions By Chemical And Spectroscopic Means (chemistry Only)' from the broader topic Chemical Analysis. The test is geared towards the AQA exam board style syllabus.
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Which observation indicates chloride ions are present when a solution is acidified with nitric acid and then treated with silver nitrate?
When using flame emission spectroscopy, what property of the emitted light allows identification of elements in a sample?
Why is it necessary to acidify a sample with dilute nitric acid before adding silver nitrate to test for halide ions?
Which ion is identified by the formation of a white precipitate with barium chloride after acidifying the sample?
Which test is most appropriate to confirm chloride rather than bromide in a sample after obtaining a white precipitate with silver nitrate?
Which precipitate and test result indicate the presence of calcium ions when sodium hydroxide is added to an aqueous sample?
What result would you expect when testing an unknown solution containing carbonate with dilute hydrochloric acid?
Which metal ion produces a lilac (violet) flame in a simple flame test?
A student acidifies a solution and adds silver nitrate: a cream precipitate forms which darkens on exposure to light. Which halide is present?
Which statement best describes a qualitative identification using a sodium flame test followed by a flame photometer reading?
In flame tests, why is a platinum or nichrome wire cleaned in hydrochloric acid and then placed in a blue Bunsen flame before testing?