Neco Model Questions Vol1 2018 Chemistry Question 3

Practice practical question 3 from the 2018 Neco Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding, Practical Skills .

Neco Model Questions Vol1 2018 Chemistry Practical

Topics: Chemical Bonding Practical Skills

Question 3 NECO_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • practical

A white crystalline solid of unknown composition is to be investigated for the type of chemical bonding present. The solid is tested for (i) electrical conductivity in the solid state, (ii) solubility in water, and (iii) electrical conductivity of its aqueous solution. Based on the observations, the nature of the bonding (ionic, covalent or metallic) should be deduced.

Question Parts

( a )

State the procedure for testing the electrical conductivity of the solid sample.

( b )

State the procedure for testing the solubility of the solid in water and the conductivity of the resulting solution.

( c )

Record the observations for the three tests and, using the data, deduce the type of bonding in the solid. State the reasoning for your conclusion.

( d )

Suggest two possible sources of experimental error in the above investigations and recommend how each could be minimised.

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About This Question

This is Neco Model Questions Vol1 2018 Chemistry Question 3. It is one of the practical questions from the 2018 Neco Model Questions Vol1 Chemistry examination.

The question covers Chemical Bonding, Practical Skills .

View More Neco Model Questions Vol1 2018 Chemistry Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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