S.K.I.I.L.E.S.
Chromtography is a technique for the separation of a mixture by passing it in solution or suspension through a medium in which the component move at different rates.
Materials.
1. skittles.
2. petri dish.
3. water.
Method.
1. Place skittle around the edge of the petri dish.
2. Carefully put water into the middle of the dish.
3. Watch to see which colours reach the middle first.
The yellow skittle went to the centre first.
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