diffusion

diffusion

the net movement of particles from an area of high concentration to an area of low concentration

• it is a physical process

factor that affects diffusion rate

high relative molecular mass → slow diffusion

the rate of diffusion will decrease as it is heavier

relative molecular mass

relative atomic mass on the periodic table × how many of the element there is

C2H6

C = 2×12 = 24

H = 6×1 = 6

relative molecular mass = 24+6=30

diatomic elements

1. Chlorine

2. Flourine

3. Bromine

4. Nitrogen

5. Bromine

6. Iodine

• the crystal dissolves

• the particles go in the water because of diffusion

• random movement makes the particles collide and bounce off each other

3 mark question