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Properties of Water

Total questions: 22

Worksheet time: 2hrs 46mins

Name
Class
Date
1.

In order to deliver nutrients to your cells, water molecules are able to surround the nutrients and carry them where they need to go. Which property of water is responsible for this?

a)

Water is the Universal Solvent.

b)

Water has a high specific heat.

c)

Cohesion of water creates surface tension.

d)

Water is more dense in liquid form.

2.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
a)
Water is an acid.
b)
Water is a versatile solvent.
c)
Water has a high heat capacity.
d)
 Water acts as a buffer.
3.
Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent? 
a)

Purity

b)

Polarity and cohesion

c)

High heat capacity

d)

Expansion upon freezing

4.
 Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
a)
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
b)
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
c)
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
d)
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
5.
A florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?
a)
Specific heat 
b)
Surface tension
c)
Cohesion and adhesion of water molecules 
d)
Formation of covalent bonds between hydrogen and oxygen molecules
6.
Water makes up approximately 60% of the human body and plays a vital role in regulating body temperature. Which property of water makes it good at regulating temperature?
a)
Water is a good solvent.
b)
Water exhibits strong cohesion.
c)

Water has an unusual crystalline structure.

d)
Water has a high capacity for heat.
7.
 Many fish and aquatic plants can survive a cold winter because the layer of ice that forms at the top of the lake insulates the water below and prevents the lake from freezing solid. What unique property of water contributes to this effect? 
a)
Water absorbs heat when it evaporates and forms a gas 
b)
 Water expands and becomes less dense when it freezes.
c)
Water molecules completely separate into ions in solutions.
d)
 Water forms hydrogen bonds with ions and other polar substances. 
8.
The charge of oxygen in a water molecule is ______________.
a)

Negative

b)

Neutral

c)

Positive

d)

Balanced

9.

What type of bond is indicated by the #1?

a)

Covalent bond

b)

Oxygen bond

c)

Hydrogen bond

d)

Triple bond

10.

What causes water to be polar?

a)

The oxygen end is negative, hydrogen ends are positive

b)

The hydrogen ends are negative, the oxygen end is positive

c)

Both oxygen and hydrogen ends are positive

d)

Both hydrogen and oxygen ends are negative

11.

A(n) --- is a substance with a pH greater than 7, while a(n) --- is substance with a pH less than 7.

a)

Base ; Acid

b)

Acid : Base

c)

Buffer : Solute

d)

Water : Solvent

12.

A substance that is more basic has a/an _____ pH than a substance that is acidic.

a)

Lower

b)

Higher

c)

Equal

13.
Why does ice stay at the top of oceans instead of sinking to the bottom?
a)

Ice is colder than liquid water.

b)
Ice is less dense than liquid water.
c)
Ice is more dense than liquid water.
d)
Ice is warmer than liquid water.
14.
What is adhesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
15.
What is surface tension?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
16.

What property/properties of water allows it to travel up from the roots of a tree to the top?

a)

Adhesion and Cohesion

b)

Surface tension

c)

Specific heat capacity

d)

Density

17.

What property of water causes water to form droplets like in the picture shown?

a)

Adhesion

b)

Cohesion

c)

Capillary action

d)

Solubility

18.

As you add drops of water to the surface of a coin, each drop sticks to the other water droplet because of ________________, and sticks to the penny because of ______________.

a)

Adhesion, Cohesion

b)

Cohesion, Adhesion

c)

Capillary action, Specific heat

d)

Specific heat, Capillary action

19.
Which end of the water molecule has a slightly positive charge?
a)

The oxygen end

b)

The hydrogen end

c)

Both ends are slightly positive

d)

Neither end is positive

20.

Which characteristic of water will allow a paperclip to remain floating on water when the paperclip is gently placed on top of the water?

a)

Adhesion

b)

Surface tension due to cohesion

c)

High Specific Heat

d)

Density

21.

The ability of water to move upward, against gravity is called?

a)

Specific heat index

b)

Density

c)

Capillary action

d)

Surface tension

22.

What term describes the ability to maintain a constant internal temperature or pH; constant conditions; balance

a)

Polarity

b)

High Specific Heat

c)

Thermo-regulation

d)

Homeostasis

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