Neco 2019 Chemistry Question 1

Practice practical question 1 from the 2019 Neco Chemistry examination. This question covers Atomic Structure .

Neco 2019 Chemistry Practical

Topic: Atomic Structure

Question 1 NECO • 2019 • CHEMISTRY • practical

A student performed a flame test on three unknown solid samples labelled X, Y and Z. The samples were placed separately in a clean platinum wire loop and introduced into a non‑luminous Bunsen‑burner flame. The following observations were recorded: - Sample X produced a bright orange‑red flame. - Sample Y produced a lilac (pale violet) flame. - Sample Z produced a green flame. The student used the standard flame‑colour chart for metal ions.

( a )

State the flame colour observed for each of the three samples.

( b )

Identify the metal ion most likely responsible for the flame colour of each sample, using the periodic table.

( c )

Suggest one possible source of error that could affect the observed flame colour and state how it can be minimised.

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This is Neco 2019 Chemistry Question 1. It is one of the practical questions from the 2019 Neco Chemistry examination.

The question covers Atomic Structure .

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