Internal Energy & Energy Transfers (AQA GCSE Physics): Quizzes

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Specific latent heat
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What is specific latent heat?

Energy to change state of 1 kg of material

What happens to temperature during a state change?

It stays constant

Where does energy go during a state change?

Breaking or forming bonds between particles

Ice melting into water is an example of which process?

Fusion

Water boiling into steam is an example of which process?

Vaporisation

What is the specific latent heat of fusion for water?

334,000 J/kg

What is the specific latent heat of vaporisation for water?

2,260,000 J/kg

Which process requires more energy for the same material?

Vaporisation

Why does vaporisation need more energy than fusion?

Gas particles are much further apart

In E=m×LE = m \times L, what does LL represent?

Specific latent heat (J/kg)

What energy is needed to melt 10 kg of ice?

3,340,000 J

What energy is needed to boil 5 kg of water into steam?

11,300,000 J

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