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BIO122 Water and its properties

Total questions: 15

Worksheet time: 16mins

Name
Class
Date
1.
Large bodies of water do not quickly fluctuate in temperature. Why?
a)
Water is a solvent.
b)
Water has a high heat capacity.
c)
Water acts as a buffer.
d)
Water is non-polar.
2.
What word describes when water is attracted to other substances?
a)
cohesion
b)
adhesion
c)
capillary action
d)
surface tension
3.
Why does water move from the roots to the leaves of plants?
a)
Water is pushed by solutes
b)
Capillary action pulls the water molecules like a chain
c)
Water is pulled by gravity
d)
Water’s cohesion causes it to “pull” towards the leaves
4.
Attractions between water molecules are called
a)
Covalent bonds
b)
Ionic bonds
c)
Polar bonds
d)
Hydrogen bonds
5.
Which is NOT a unique property of water?
a)
Frozen water floats on liquid water.
b)
Water covers most of the Earth’s surface and retains a large amount of heat.
c)
Water molecules stick to each other through hydrogen bonds.
d)
Water cools very rapidly.
6.
What property of water helps to moderate earth's temperature?
a)
adhesion
b)
chohesion
c)
Specific heat capacity
d)
Latent heat of vaporization
7.
Water is polar because...
a)
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.
b)
The molecule has two poles, at which the it is colder than other regions of the molecule.
c)
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.
d)
The water molecule is neutral.
8.
Which types of compounds dissolve easily in water?
a)
Polar and Nonpolar
b)
Polar and Ionic
c)
Nonpolar and Ionic
d)
Covalent and Nonpolar
9.

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

a)

ionic

b)

Hydrogen

c)

Covalent

d)

Weak

10.

hydrophobic

a)

water absorption

b)

Water evaporating

c)

Water fearing

d)

Water saturation

11.

What is a polar covalent bond.

a)

An ionic bond in which electrons are not shared equally.

b)

A covalent bond in which electrons are not shared equally within a molecule

c)

A covalent bond where protons are not shared equally within a molecule

d)

An ionic bond where protons are not shared equally within a water molecule.

12.

You body sweats to help prevent you from overheating. How does water regulate temperature?

a)

it lets heat pass through it

b)

it absorbs a lot of heat, then decreases in temperature

c)

it absorbs a lot of heat, but only increases a little in temperature

d)

heat is afraid of water and avoids it

13.

Water is polar. What does that mean?

a)

it is a molecule with opposite charges on opposite ends

b)

it is a molecule with no charge

c)

it is a molecule with identical charges on opposite ends

d)

it is a molecule with too many protons

14.

What can you conclude about the liquids in the cup?

a)

they are both polar

b)

they are both nonpolar

c)

one is polar and the other is nonpolar

15.

Which of the following properties best explains why a basilisk lizard is able to run across water?

a)

capillary action

b)

like dissolves like

c)

surface tension

d)

polarity