Waec Model Questions Vol1 2017 Chemistry Question 3

Practice practical question 3 from the 2017 Waec Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding .

Waec Model Questions Vol1 2017 Chemistry Practical

Topic: Chemical Bonding

Question 3 WAEC_MODEL_QUESTIONS_VOL1 • 2017 • CHEMISTRY • practical

A student prepared magnesium oxide (MgO) by burning a clean piece of magnesium ribbon in air. The following data were recorded during the experiment:

Question Parts

( a )

Calculate the mass of MgO obtained after the reaction.

( b )

Using the masses of magnesium and oxygen in the product, determine the empirical formula of the compound formed.

( c )

Based on the empirical formula obtained and the observed physical properties (white solid, melting point ≈ 2850 °C, insoluble in water, conducts electricity when molten), state the type of chemical bond present in the compound and justify your answer.

( d )

Suggest one further qualitative test that could be performed to confirm the ionic nature of MgO.

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About This Question

This is Waec Model Questions Vol1 2017 Chemistry Question 3. It is one of the practical questions from the 2017 Waec Model Questions Vol1 Chemistry examination.

The question covers Chemical Bonding .

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