6.5 specific latent heat

Question 1

What is latent heat?

Answer 1

The energy needed for a substance to change it state without changing temperature

Question 2

What is specific latent heat of fusion (vaporisation)

Answer 2

The energy needed to melt (boil) 1 kg of a substance away without changing its temperature

Question 3

What is the equation for latent heat?

Answer 3

E = m L

Question 4

How can a specific latent heat of ice be measured?

Answer 4

Using a low-voltage cheater to melt the ice (or boil the water)

Question 5

What does Lf represent?

Answer 5

Specifically latent heat of fusion (J/KG)

Question 6

What does E represent?

Answer 6

Energy (joules, J)

Question 7

What does M represent?

Answer 7

Mass (kilograms, KG)

Question 8

What does Lv represent?

Answer 8

Specific latent heat of vaporisation (joules per kilogram, J/KG)

Question 9

What is specific latent heat of fusion?

Answer 9

The energy needed to melt 1 kg of the substance with no change of temperature

Question 10

What is specifically late in heat of vaporisation?

Answer 10

The energy needed to boil away one kg of a substance with no change of temperature