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Sink or swim

This experiment demonstrates how a piece of paper floats in one type of liquid but sinks in another.



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Here is what you need, water, two glasses, two pieces of paper, a spoon, washing-up liquid, Fill the two glasses with water, Pour some washing-up liquid into one of the glasses, Stir it up, See what happens when you drop a piece of paper into each glass, What happened?, Why did one paper sink while the other one floated?
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