Chemistry Unit 7 Notes: Diffusion

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Presentation transcript:

Chemistry Unit 7 Notes: Diffusion

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

(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.

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

(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.

(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.