Properties of Water

Front

Why does ice float?

Back

As water freezes, it expands and its density decreases.

Front

Which end of the water molecule has a slightly positive charge? Options: the oxygen end, the hydrogen end, both ends are slightly positive, neither end is positive

Back

the hydrogen end

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

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

The tightness across the surface of water that enables paper clips to float is ____________.

Back

surface tension

Front

Why do water molecules stick together?

Back

One side has a positive charge and the other side has a negative charge.

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