B2 - Diffusion

  • Definition
  • Cellular diffusion
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What is Diffusion?
Diffusion is the spreading out of particles from an area of high concentration to an area of low concentration.
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What states of matter does diffusion occur?
Fluids and gases (where particles can move freely).
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How does diffusion occur in perfume?
Perfume particles are highly concentrated into a small space where it spreads out to mix with air particles.
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What gets diffused in cells.
Dissolved substances can move in and out of cell membranes by diffusion.
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What size molecules can be diffused?
Only very small molecules can be diffused through cell membranes e.g. oxygen, glucose, amino acids, water.
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How does cellualr diffusion work?
Larger particles are broke down and move from the higher concentration (outside the cell) to the lower concentration (inside the cell).
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Card 2

Front

What states of matter does diffusion occur?

Back

Fluids and gases (where particles can move freely).

Card 3

Front

How does diffusion occur in perfume?

Back

Preview of the front of card 3

Card 4

Front

What gets diffused in cells.

Back

Preview of the front of card 4

Card 5

Front

What size molecules can be diffused?

Back

Preview of the front of card 5
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