Specific Latent Heat

Question 1

What is specific latent heat?

Answer 1

SLH is the energy required to change the state of 1kg of a substance

Question 2

What is latent heat?

Answer 2

If a change of state happens, the heat energy needed for a substance to change state is called latent heat. This heat energy goes into breaking the bonds between particles while a substance is changing state.

Question 3

What are the two types of latent heat?

Answer 3

Specific latent heat of fusion & specific latent heat of vaporisation

Question 4

What is specific latent heat of fusion?

Answer 4

Energy needed to change state from solid to liquid without any temperature change

Question 5

What is specific latent heat of vaporisation?

Answer 5

Energy needed to change state from liquid to gas without any temperature change

Question 6

Energy transferred formula?

Answer 6

Energy transferred = mass x specific latent heat of fusion/vaporisation

Question 7

Units of specific latent heat

Answer 7

J/kg