During today's experiment, we learned that cohesion is the force that attracts molecules to themselves. Water and glycerin both have a lot of cohesion. When we put a drop of water and glycerin on waxed paper, the drops stayed in a circle form and did not spread out. Soapy water, cooking oil, and alcohol do not have a lot of cohesion. Those drops spread out into a thin layer of liquid on the waxed paper.
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