Properties of Water

Front

What is the significance of the low density of frozen water in lakes?

Back

Frozen water (ice) floats on liquid water, providing insulation for aquatic organisms during cold weather.

Front

Define adhesion in the context of water properties.

Back

Adhesion is the attraction between water molecules and other substances.

Front

What characterizes an unsaturated solution?

Back

An unsaturated solution contains less solute than a saturated solution.

Front

Explain why insects like water striders can walk on water.

Back

Insects can walk on water due to surface tension, which is a result of hydrogen bonds between water molecules.

Front

Why does ice float on water?

Back

Ice floats because it is less dense than liquid water; as water freezes, it expands.

Front

What is surface tension and how is it related to water?

Back

Surface tension is the cohesive force at the surface of a liquid, caused by the attraction between water molecules.

Front

How does temperature affect the density of water?

Back

As temperature decreases, water becomes denser until it reaches 4°C; below this temperature, water expands and becomes less dense.

Front

What role do hydrogen bonds play in the properties of water?

Back

Hydrogen bonds contribute to water's high surface tension, specific heat, and solvent properties.

Front

What is the difference between cohesion and adhesion?

Back

Cohesion is the attraction between water molecules, while adhesion is the attraction between water molecules and other substances.

Front

How does water's high specific heat benefit aquatic environments?

Back

Water's high specific heat helps stabilize temperatures in aquatic environments, protecting organisms from temperature fluctuations.