Free Printable Properties of Water

Worksheets

Properties of Water

Total questions: 15

Worksheet time: 11mins

Name

Class

Date

Which of the following makes up a molecule of water?

one atom of oxygen, two atoms of hydrogen

one atom of hydrogen, two atoms of oxygen

one atom of chlorine, one atom of sodium

one atom of hydrogen, one atom of oxygen

Ice floats on water because

adhesion

cohesion

water expands when it freezes

water shrinks when it freezes

When salt is dissolved in water, water is the

solvent

solute

solution

reactant

A solution is a(an)...

chemical reaction

breaking of a chemical bond

combination of two or more liquids

evenly distributed mixture of two or more substances

Capillary action is....

adhesion

cohesion

change in matter (heat of fusion)

both adhesion and cohesion

Oil and water don't mix because oil is

hydrophilic

hydrophobic

an emulsifier

a buffer

Large bodies of water do not quickly fluctuate in temperature. Why?

Water is a solvent.

Water has a high heat capacity.

Water acts as a buffer.

Water is non-polar.

Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?

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

The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.

The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.

The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next

What word describes when water is attracted to other substances?

cohesion

adhesion

capillary action

surface tension

10.

Attractions between water molecules are called

Covalent bonds

Ionic bonds

Polar bonds

Hydrogen bonds

11.

Water is polar because...

The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.

The molecule has two poles, at which the it is colder than other regions of the molecule.

The unequal sharing of electrons gives the water molecule a slight negative charge near its hydrogen atoms and a slight positive charge near its oxygen atom.

The water molecule is neutral.

12.

Which types of compounds dissolve easily in water?

Polar and Nonpolar

Polar and Ionic

Nonpolar and Ionic

Covalent and Nonpolar

13.

The bond that holds the Oxygen and Hydrogen atoms together within a water molecule is a ________ bond.

ionic

Hydrogen

Covalent

Weak

14.

Which of the following characteristics of water is not a result of hydrogen bonding?

adhesive strength

capillarity

cohesive strength

All of the above are a result of hydrogen bonding.

15.

What is the reason why oil and water don't mix?

Oil is too heavy to mix with water

Water can only mix with polar molecules

Water can only mix with non-polar molecules

Oil is too light to mix with water

100 %

Properties of Water

Total questions: 15

Worksheet time: 11mins

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