Intermolecular Forces Practice

Front

What property of water allows it to act as a temperature regulator for the world?

Back

High Specific Heat: Water can absorb a lot of heat before its temperature changes, helping to stabilize temperatures in the environment.

Front

What term describes the attraction of water to other substances?

Back

Adhesion: This is the property that allows water to stick to other materials.

Front

Why can small insects walk on the surface of calm water without breaking it?

Back

The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together.

Front

What causes water to have an unusually high boiling point compared to other molecular compounds?

Back

Hydrogen Bonding: The strong attractions between water molecules require more energy (heat) to break.

Front

Does CH4 (methane) exhibit hydrogen bonding?

Back

No: Methane does not have hydrogen bonding due to the lack of highly electronegative atoms.

Front

What is cohesion in the context of water?

Back

Cohesion: The attraction between water molecules, which allows them to stick together.

Front

What is the significance of water's high specific heat in nature?

Back

It helps regulate climate and maintain stable temperatures in aquatic environments.

Front

What is capillary action?

Back

Capillary Action: The ability of water to flow in narrow spaces without the assistance of external forces, due to adhesion and cohesion.

Front

What is surface tension?

Back

Surface Tension: The elastic-like force existing at the surface of a liquid, caused by the attraction of molecules to each other.

Front

How does hydrogen bonding affect the density of ice compared to liquid water?

Back

Ice is less dense than liquid water because hydrogen bonds hold water molecules in a fixed structure, making ice expand.