Properties of Water

Front

What is the reason ice floats on liquid water?

Back

Ice floats on liquid water because it is less dense than liquid water.

Front

What percentage of Earth's water is salt water?

Back

97% of Earth's water is salt water.

Front

Why does ice float?

Back

Ice floats because as water freezes, it expands and its density decreases.

Front

Which end of the water molecule has a slightly positive charge?

Back

The hydrogen end of the water molecule has a slightly positive charge.

Front

What term describes the attraction of water to other substances?

Back

Adhesion describes the attraction of water to other substances.

Front

What is the term for the attraction between water molecules?

Back

Cohesion is the term for the attraction between water molecules.

Front

What is surface tension in water?

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane.

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 is the molecular structure of water?

Back

Water is composed of two hydrogen atoms covalently bonded to one oxygen atom (H2O).

Front

How does temperature affect the density of water?

Back

As water cools, it becomes denser until it reaches 4°C; below this temperature, it begins to expand and become less dense.