diffusion of molecules(unit 3)

Question 1

what is diffusion

Answer 1

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.

Diffusion happens in liquids and gases because their particles move randomly from place to place.

Diffusion is an important process for living things; it is how substances move in and out of cells.

Question 2

where can diffusion occur

Answer 2

in the membrane

Question 3

what factors affect the rate of diffusion

Answer 3

size 
temperature 
distance through object
surface area
shape of the surface of which the molecules are diffusing