The movement of particles through an area where they are at a lower concentration
Factors affecting rate of diffusion
Temperature (hot and cold)
Concentration of particles
Higher temperature
Particles have more energy and move more
Higher concentration
Faster diffusion
Osmosis
The diffusion of water molecules from a region of high water concentration to a region of low water concentration through a partially permeable membrane
We can investigate osmosis
what is the process by which carbon dioxide can move into and out of cells?
