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What will happen if you put 2 colours on each other using one piece of paper and put it in the water.

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The colours mixed together and popped out, the colours with smaller particles moved faster than the colours with big particles.

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Cut out 2- by 15 centimetres strips of blotting paper.
Fold each strip in half midway along its length, unfold it again and draw a heavy felt-pen line along the crease.
Repeat this progress on several strips of paper  marking each with a different coloured ink.
Place an end of each strip in a bowl of water (You may have to rise the bowl slightly to help the water soak down the paper.)
Before the water seeps through the strips, guess what's going to happen to the colours in the ink.

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A sheet of blotting paper
A ruler
Scissors
A bowl of water
A pencil
Coloured pens

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Maybe the paper is made to change in the water.

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What would happen if you pull colours apart?