Diffusion Lab

A drop disperses through real-looking water.

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Conditions

25 °C
70%
20%
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Observation

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Conditions: moderate particle motion and gentle mixing.

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Complete narrated lesson

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Chapters

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Learning objectives

  • Describe net movement down a concentration gradient.
  • Recognize random molecular motion.
  • Predict effects of heat and fluid movement.
  • Compare diffusion in liquids, gases and organisms.

Try this

  • Release dye in cold and warm water.
  • Compare still air with strong airflow.
  • Observe that equilibrium does not stop molecular motion.

7-question quiz

Score: 0 / 7