Diffusion

Question 1

What is Diffusion?

Answer 1

When particles spread out in any substance resulting in movement from an area of high concentration to low concentration.

Question 2

What affects the Rate of diffusion?

Answer 2

The rate of diffusion is affected by the difference in concentrations, the temperature and the available surface area.

Question 3

What substances move in and out of cells by diffusion?

Answer 3

Dissolved substance such as glucose and urea

Gases such as oxygen and carbon dioxide