Properties of Water

Front

What allows small insects to 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 term describes the attraction of water to other substances?

Back

Adhesion.

Front

Why is water considered a universal solvent?

Back

Because it dissolves most substances.

Front

What is a molecule called when it has opposite electrical charges on each end?

Back

Polar molecule.

Front

Which of the following is least likely to dissolve in water?

Back

Nonpolar fats and oils.

Front

What is cohesion in relation to water?

Back

Cohesion is the attraction between water molecules due to hydrogen bonding.

Front

What is surface tension?

Back

Surface tension is the property of water that allows it to resist external force due to the cohesive nature of its molecules.

Front

What is capillary action?

Back

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

Front

What happens to water when it freezes?

Back

Water expands and becomes less dense, allowing ice to float.

Tags

NGSS.MS-PS1-4

Front

What is the significance of water being a polar molecule?

Back

Its polarity allows it to dissolve many ionic and polar substances, making it an effective solvent.