Question

Q16.A needle can be made to "float" on the surface tension of water. What causes this surface tension to form?

Select one:
a. The ability of water to regulate temperature
b. The cohesion of water molecules to each other
c. The ability of water to act as a solvent
d. None of the above X

Answer 1

B

Step-by-step explanation:

Water has surface tension due to cohesion that allows it to 'stick' together. This cohesion is created by the fact that water is polar and has unequal distribution of charges. The oxygen becomes slightly negative as it is surrounded by positive hydrogen. In turn, the hyrdogen becomes slightly positive.

This means that the hydrogen molecule is temporarily attracted to the oxygen of another molecule. This causes surface tension and allows light objects to float on top of it

Hope this helps!