HOMEWORK #1: Properties of Water

Front

When water sticks to itself, what is taking place?

Back

Cohesion

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 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

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 without breaking it?

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

A(n) ______ is a substance with a pH less than 7

Back

Acid