Specific Latent Heat (OCR GCSE Physics A (Gateway Science Suite)): Quizzes

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Specific Latent Heat
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What is specific latent heat?

Energy to change state of 1 kg without temp change

What happens to temperature during a change of state?

It remains constant

What is the specific latent heat of fusion?

Energy to melt/freeze

What is the specific latent heat of vaporisation?

Energy to boil/condense

What is the formula for energy during a change of state?

E=mLE = mL

What are the units for energy in the formula E=mLE = mL?

Joules (J)

What are the units for specific latent heat (LL)?

Joules per kilogram (J/kg)

In the formula E=mLE = mL, what does mm represent?

Mass in kilograms

What must happen before a substance can change state?

It must be at the right temperature

For how much substance is specific latent heat defined?

1 kg

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