Energy and heating - AQA

1

What is a thermal conductor?

2

Which is the best insulator?

3

Why is loft insulation so effective?

4

What would make the best material for wrapping around a mug to keep a hot drink warm for as long as possible?

5

What happens to the molecules in a liquid as it gets hotter?

6

What happens to the molecules in a solid as it gets hotter?

7

How much energy will it take to raise 3 kg of water by 5˚C? (water has a specific heat capacity of 4,200 J/kg˚C)

8

How much energy will a 30 W heater provide in 5 minutes?

9

When doing an experiment to find the specific heat capacity, which of these items of equipment is not needed?

10

If the same amount of heat energy were to be provided to a block of twice the mass of the same material, what would happen to the temperature rise?