Specific Heat Capacity + Internal Energy + Specific Latent Heat

Question 1

What is specific latent heat?

Answer 1

The amount of energy required to change the state of 1kg of a substance with no change in temp

Question 2

What’s the equation for specific latent heat?

Answer 2

E=mL

E = energy /J
M= mass/kg
L= specific latent heat J/Kg

Question 3

What is internal energy?

Answer 3

The total kinetic energy and potential energy of all the particles

Question 4

What are the two types of latent heat?

Answer 4

Latent heat of fusion, latent heat of vaporisation

Question 5

What factors affect specific heat capacity?

Answer 5

• mass
• type of material
• energy input

Question 6

What does a low specific heat capacity mean to how quickly the reaction heats up / cools down?

Answer 6

• heats up + cools down quickly

Question 7

As the particles change from a liquid to being cooled and frozen, what happens to the kinetic and potential energy?

Answer 7

Both decrease

Question 8

Why is water evaporating to steam a physical change?

Answer 8

The water will recover its original properties if the steam is cooled