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

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

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

What is the correct colour change when carbon dioxide is bubbled through limewater?

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

A student adds dilute hydrochloric acid to a solid sample and observes effervescence and a gas that turns limewater milky. Which ion is present in the solid?

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?

When using flame emission spectroscopy, what property of the emitted light allows identification of elements in a sample?