U1 Energy Transfer by heaing

Question 1

What are the 5 types of heat transfer?

Answer 1

Conduction.
Convection.
Condensation.
Evaporation.
Infrared Radiation.

Question 2

Why are metals good conductors of heat?

Answer 2

The particles are all very close together.

They contain delocalised electrons that are free to move around the metal and transfer kinetic energy.

Question 3

Describe the process of Conduction

Answer 3

As a solid is heated up the particles on the heated end gain kinetic energy and vibrate more than they would normally. This causes them to collide with their neighbours and transfer a bit of kinetic energy to them. this is repeated and also happens with the electrons.

Question 4

Insulators

Answer 4

Poor conductors are good insulators.
Insulators don’t transfer energy well.
Materials are poor conductors because the particles aren’t arranged neatly in rows and columns and/or have no free electrons.

Question 5

What is the only state of matter that conduction can occur in?

Answer 5

Solids.