1. Chemistry Unit 7 Notes: Diffusion

2. (1) What is Diffusion?
Movement of particles from an area of HIGHER concentration  LOWER concentration.
Particles spread out until reaching equilibrium.

5. (2) What is concentration?
Concentration = How many particles are packed into a given space.
HIGH Concentration = A LOT of particles packed into a given space.
LOW Concentration = A few particles / zero particles packed into a given space.

7. (3) Heat Energy & Particle Movement
Heat Energy makes particles move FASTER! 
Gain Heat Energy  Move Faster
Lose Heat Energy  Move Slower

9. (4) Diffusion & Heat Gain
If particles gain heat energy…
They will move faster.
Which means they will spread out faster from HIGH to LOW concentration.
Particles will reach equilibrium faster! 
*This is similar to when we boiled water and added the food coloring.

10. (5) Diffusion & Heat Loss
If particles lose heat energy…
They will move slower.
Which means they will spread out slower from HIGH to LOW concentration.
Particles will reach equilibrium slower! 
*This is similar to when we added food coloring to ice water.