Igcse Model Questions Vol1 2018 Chemistry Question 3

Practice practical question 3 from the 2018 Igcse Model Questions Vol1 Chemistry examination. This question covers Chemical Bonding .

Igcse Model Questions Vol1 2018 Chemistry Practical
Topic: Chemical Bonding
Question 3 IGCSE_MODEL_QUESTIONS_VOL1 • 2018 • CHEMISTRY • practical

You are given three white crystalline solids labelled X, Y and Z. Each sample is about 2 g. Your task is to determine the type of chemical bond present in each substance (ionic, covalent or metallic) using simple laboratory techniques.

Question Parts

( a )
Suggest a practical procedure that will allow you to distinguish between ionic, covalent and metallic substances. State the equipment required and the observations you would expect for each type of bond.
( b )
You performed the procedure and recorded the following observations: - Sample X dissolved readily in water and the bulb lit brightly. - Sample Y did not dissolve; the bulb remained off. - A small piece of Sample Z placed directly in the circuit caused the bulb to light, but when dissolved in water the bulb stayed off. Identify the type of bond present in each sample.
( c )
Suggest one likely source of error in the experiment and how it could be minimised.

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About This Question

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

The question covers Chemical Bonding .

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

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