Front

What two elements make up water?

Back

Hydrogen and oxygen

Front

What word describes when water is attracted to other substances? Options: cohesion, adhesion, capillary action, surface tension

Back

adhesion

Front

Attractions between the negative Oxygen atom of one water molecule and the positive Hydrogen atom of another water molecule are called

Back

Hydrogen bonds

Front

Why is water considered a universal solvent?

Back

Dissolves most substances

Front

Which of the following is LEAST likely to dissolve in water? Options: nonpolar fats and oils, polar sugar molecules, salt made of a positive sodium ion and a negative chloride ion, all of the substances will dissolve easily in water

Back

nonpolar fats and oils

Front

Why can small insects walk across the surface of calm water?

Back

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

Front

Why does water move from the roots to the leaves of plants?

Back

Capillary action pulls the water molecules like a chain

Front

Why does ice float?

Back

As water freezes, it expands and its density decreases.

Front

Freezing point of water is

Back

0 degrees Celsius

Front

Boiling point of water is

Back

100 degrees Celsius