Properties of Water

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

Why does ice float? Options: As water freezes, it expands and its density decreases., As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy., As water freezes, air becomes trapped between the hydrogen bonds of water molecules., As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Back

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

Front

Why is water considered a universal solvent?

Back

Dissolves most substances

Front

Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?

Back

Water has a high heat capacity.

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

When a molecule has an opposite electrical charge on each end, it is known as what?

Back

polar molecule

Front

When water molecules stick easily to other water molecules, this is called what?

Back

cohesion