Question

cohesion between molecules at the surface of a liquid is called surface tension. water molecules below waters surface form hydrogen bonds with molecules all around them. but water molecules at the surface form hydrogen bonds with only the molecules next to and below them. so, molecules at the surface experience a strong downward pull from the molecules below. this causes surface molecules to pull together, forming a barrier on waters surface that is resistant to breaking. surface tension allows some insects, like water striders, to walk on the surface of a pond. surface tension is also responsible for the spherical shape of a water drop. select the true statements. surface tension only forms on small amounts of water, such as raindrops and dewdrops. surface tension only forms on large bodies of water, such as lakes and ponds. hydrogen bonds between waters surface and a water strider allow it to walk on water. water molecules on the surface are pulled downward by the molecules below.

Explanation:

• The first statement is false because surface tension is a property of the liquid's surface (due to cohesive forces) and is not limited to small - amount water.
• The second statement is false as surface tension is a general property of water's surface (or any liquid's surface with cohesive forces) and not restricted to large bodies of water.
• The third statement is false. It is the surface tension (due to cohesive forces among water molecules) that allows water striders to walk on water, not hydrogen bonds between water's surface and the water strider.
• The fourth statement is true as per the text: "molecules at the surface experience a strong downward pull from the molecules below".

Answer:

Only the statement "Water molecules on the surface are pulled downward by the molecules below" is true.