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2.3.1a Thermal conductors and thermal insulators

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Question 2

The table shows the state of materials W, X, Y, and Z, and whether each one contains free electrons.

Material	Gas	Liquid	Solid	Contains free electrons
W	$✓\checkmark$	$×\times$	$×\times$	$×\times$
X	$×\times$	$×\times$	$✓\checkmark$	$×\times$
Y	$×\times$	$✓\checkmark$	$×\times$	$×\times$
Z	$×\times$	$×\times$	$✓\checkmark$	$✓\checkmark$

Using the information in the table, which comparison of the thermal conduction in the materials is correct?

It is better in W than in X and Y.

It is better in Y than in Z and W.

It is better in Z than in X and Y.

It is better in X than in Z and W.

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2.3.1a Thermal conductors and thermal insulators Questions

IGCSE
Physics
2.3.1a Thermal conductors and thermal insulators

67 exam-style questions on CIE IGCSE Physics 2.3.1a Thermal conductors and thermal insulators. Each one has a worked solution and a mark scheme showing where the marks go.

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