Monday, November 22, 2010

Surface Tension Reflection

The experiment that we did today in science class was very interesting. We were trying to see how many drops of water would be able to fit on a penny without dropping on the table. I predicted that 5 drops of water would fit but it turned out 63. IT turned out 63 because water molecules attract other water molecules, the hydrogen part of water has a positive charge and the oxygen part of water has a negative charge so they are like a magnet and that’s why water is so cohesive. We put the water droplets on wax paper and moved them around with toothpicks; we tried to make the water droplet as big as it can be. From that I figured that even a tiny drop of soap can break the water tension. This experiment was really funny because we saw how many water droplets can fit on a penny and it was much more then we expected.

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