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Particles on the move

One tiny purple crystal colours a whole beaker: the particles spread out by themselves.

Topic: First chemistry (grades 7–8)Grade: 7Free

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What you do

  1. Add one potassium permanganate crystal to beaker 1 and watch the colour spread.
  2. Heat beaker 2 to about 50 °C.
  3. Add a crystal to the warm water too. In warm water the particles move faster, so it spreads faster.

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