Diffusion is the net movement of particles from an area of high {{}} to an area of low {{}}.

Which of these is an example of diffusion?

Diffusion happens quicker at higher temperatures because particles have more {{}} energy.

Match the adaptation of alveoli to the explanation.

Calculate the surface area to volume ratio of a cube with a side length of 10 cm. Give your answer as a decimal and do not include units.

Which **two** of the following are leaf adaptations for diffusion?

Key Stage 4

Diffusion and exchange surfaces

How would the ratio between 3 and 5 be correctly written?

In which **two** states of matter are particles free to move?

Calculate the surface area of a cube with a side length of 1 cm.

Calculate the volume of a cube with a side length of 1 cm.

{{}} is a gas that is inhaled in the gas exchange system, where it then moves into the blood.