Specific latent heat

Question 1

What does changes in state mean?

Answer 1

Changing from one physical state to another

Question 2

What is the process from a solid to a liquid

Answer 2

Melting

Question 3

What is the process from a liquid to a gas

Answer 3

Boiling

Question 4

What is the process from a gas to a liquid

Answer 4

Condensing

Question 5

What is the process from a liquid to a solid

Answer 5

Freezing

Question 6

What is specific latent heat?

Answer 6

Amount of energy needed to change the state of 1 kg of a substance

Question 7

Equation for amount of energy needed

Answer 7

energy (J) = SLH (J/kg) x mass (kg)

Question 8

Specific Latent Heat of fusion

Answer 8

water - 334,000
lead - 24,500
ethanol - 108,000

Question 9

Specific Latent Heat of vaporisation

Answer 9

water - 2,260,000
lead - 871,000
ethanol - 855,000

Question 10

What is the latent heat of fusion?

Answer 10

melting

the energy needed to break intermolecular bonds between particles in the solid that can move around

Question 11

What is the latent heat of vaporisation?

Answer 11

boiling and evaporating

Question 12

Change during bond breaking

Answer 12

There is no temperature change during bond breaking