Question

question 18 (multiple choice worth 3 points) (05.04r mc) why does water have a high surface tension? hydrogen bonding keeps water molecules close together. water is a liquid at room temperature. water molecules contain 18 electrons. the lengths of the bonds in water molecules can change.

Explanation:

Surface tension is due to cohesive forces between liquid molecules. In water, hydrogen - bonding creates strong cohesive forces that keep water molecules close together at the surface, resulting in high surface tension. The other options do not directly relate to surface - tension.

Answer:

Hydrogen bonding keeps water molecules close together.