Here follow my instructions for the water surface tension experiment. We will use water and cinnamon, since it is a really a special spice. It is very dry, as you notice if you would try to swallow it with a teaspoon. And no, don’t try that yourself, you can search for YouTube after the “cinnamon challenge”.
Remember to start the experiment with a hypothesis, what do you think will happen?
Instructions for parents: Read this first.
The properties of the water and the cinnamon do not work well together, and therefore these two substances are not easily mixed. So when you put in your finger in the glass, the cinnamon will form a layer between you and the water and you will not get wet.
In your glass of water or a lake, there is something called surface tension. It is a force that can be compared to a thin barrel on the water. That is why some insects can walk on the water surface
When you dip the liquid soap into the water, the surface tension is destroyed and the cinnamon moves away.
To see others do the experiment look at this video:
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Do you have any questions or comments about the experiment? Just leave a comment below!