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

Which observation indicates the presence of carbonate impurities when testing for sulfate with barium chloride?

Which metal ion produces a lilac (violet) flame in a simple flame test?

Which observation would identify the presence of iron(II) ions when sodium hydroxide is added to a sample?

Which instrumental technique would give a spectrum with sharp emission lines that can be matched to known elements for identification of metal ions in solution?

In flame tests, why is a platinum or nichrome wire cleaned in hydrochloric acid and then placed in a blue Bunsen flame before testing?

Which observation identifies the presence of copper(II) ions when sodium hydroxide is added to an aqueous sample?

Which pair of tests would distinguish between sodium and potassium ions in an unknown solution?

Which technique is best for detecting trace amounts of sodium and potassium in solution with high sensitivity and giving numerical results?

Which cation gives a brick-red colour in a flame test and can be confirmed by its specific emission lines?

Which statement best describes a qualitative identification using a sodium flame test followed by a flame photometer reading?

Which flame test colour is characteristic of sodium ions?