Diffusion

Question 1

Definition

Answer 1

The net movement of particles from an area of high concentration to a low concentration, down a concentration gradient, until equilibrium is met

Question 2

Factors that affect diffusion

Answer 2

Concentration gradient
Surface area
Temperature

Question 3

What type of process is diffusion?

Answer 3

Passive process - no energy is needed for it to happen

Question 4

How does the concentration gradient affect diffusion?

Answer 4

The higher it is, the faster the rate. However as it moves towards equilibrium the gradient gets smaller and therefore over time the rate slows down

Question 4

How does the thickness of the exchange surface affect diffusion?

Answer 4

The thinners it is (I.e the shorter the distance the particles have to travel) the faster the rate

Question 5

How does surface area affect the rate of diffusion?

Answer 5

The larger the SA, the faster the rate

Question 6

How does temperature affect diffusion?

Answer 6

The higher it is, the faster the rate as the particles have more kinetic energy to move/diffuse