Heat And Temperature

Question 1

What is absolute zero?

Answer 1

-273C
The lowest temperature that is possible to achieve

Question 2

Define heat

Answer 2

Heat is a form of energy

Question 3

How do you convert Celsius to Kelvin?

Answer 3

Celsius temperature - 273

Question 4

Define specific heat capacity and what is the measurement unit?

Answer 4

The specific heat capacity of a material is the heat required to raise the temperature of 1 kilogram of the material by 1°C

J/kg°C

Question 5

Why is water good for fighting fire?

Answer 5

It has a high specific heat capacity meaning a given mass of water can absorb a relatively large amount of heat energy

Question 6

What would raising the pressure of a container of gas do to it’s boiling point?

Answer 6

Lower the boiling point - meaning the gas is now liquid

Question 7

What is meant by change of state?

Answer 7

The changes between solid and liquid states and liquid and gas states

Question 8

Give 3 examples of change of state

Answer 8

Latent heat of vaporisation
Latent heat of fusion
Cooling by evaporation