Waec Model Questions Vol1 2017 Chemistry Question 1
Practice practical question 1 from the 2017 Waec Model Questions Vol1 Chemistry examination. This question covers Atomic Structure .
A student is given three unknown solid samples labelled X, Y and Z. The following experimental procedures were carried out on each sample: 1. Flame test – the colour of the flame was observed. 2. Solubility test – a small amount of the sample was added to dilute hydrochloric acid (0.1 M HCl) and any observable reaction was recorded. Observations recorded: - Sample X: orange‑red flame; dissolves in HCl with effervescence (bubbling). - Sample Y: green flame; remains insoluble in HCl, no visible reaction. - Sample Z: violet flame; dissolves in HCl, no gas evolved.
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This is Waec Model Questions Vol1 2017 Chemistry Question 1. It is one of the practical questions from the 2017 Waec Model Questions Vol1 Chemistry examination.
The question covers Atomic Structure .
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