Water Flashcard Review

Front

What is meant by the term polar molecule?

Back

A polar molecule has a positive charge on one end and a negative charge on the other end.

Front

What is the term for the attraction among water molecules and the molecules of surrounding materials?

Back

Capillary action.

Front

What is surface tension in the context of water?

Back

Surface tension is the tightness across the surface of water because polar molecules pull on each other.

Front

How is density defined in a scientific context?

Back

Density is the measurement of the amount of matter contained in a given volume.

Front

What is specific heat?

Back

Specific heat is the amount of heat needed to raise the temperature of a certain mass by 1°C.

Front

What property of water allows it to dissolve many substances?

Back

Polarity.

Front

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

Back

It helps regulate temperature in the environment and in organisms.

Front

How does capillary action benefit plants?

Back

It allows water to move from the roots to the leaves.

Front

What role does surface tension play in aquatic ecosystems?

Back

It allows small organisms to walk on water and supports the structure of water bodies.

Front

What is the relationship between temperature and density in water?

Back

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