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2.3.1a Thermal conductors and thermal insulators

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Question 25

Which statement describes the primary reason why metals are much better conductors of thermal energy than non-metal solids?

A

Metal atoms can detach and flow freely from the hot end to the cold end.

B

Metals contain delocalised (free) electrons that can move rapidly through the lattice to transfer energy.

C

The intermolecular forces in metals are extremely weak, allowing molecules to vibrate more easily.

D

Metals are less dense than non-metals, which allows thermal energy to disperse more quickly.

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2.3.1a Thermal conductors and thermal insulators Questions

  1. IGCSE
  2. /Physics
  3. /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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