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properties of water: Cohesion and Adhesion

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.
molecule in which opposite ends have opposite electric charges
a)
cohesion
b)
polar molecule
c)
hydrogen bond
d)
solution
2.
Water has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?
a)
Flooding would occur and animals would be forced to migrate
b)
 Harmful organisms living in water would reproduce at a rapid rate
c)
Organisms that are sensitive to changes in temperature would die
d)
Plants would not have enough water to effectively carry out photosynthesis
3.
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.
4.

Which of the following is the correct molecular structure for water, H2O?

a)
b)
c)
d)
5.

Why does ice float?

a)

water expands when it freezes, making ice less dense than water

b)

water compacts when it freezes, making ice more dense than water

c)

hydrogen bonds in water push the ice to the surface

d)

ice is afraid of water, and avoids it

6.

What is the term for water's ability to defy gravity and climb up a tube?

a)

Capillary Action

b)

Specific Heat

c)

Universal Solvent

d)

Magic

7.

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

8.

Which part of a water molecule has a Positive Charge?

a)

The Hydrogen

b)

The Oxygen

c)

The Top

d)

The Bottom

9.

a water droplet clinging to a leaf is known as...

a)

sticking

b)

adhesion

c)

cohesion

d)

tension

10.

an example of surface tension is...

a)

water "bubble" forming when dropped on a plastic bag

b)

water striders moving across the top of water

c)

a needle floating on top of water

d)

all of the above

11.

salt and water are mixed together. the solute is the....

a)

salt

b)

water

12.

salt and water are mixed together. the solvent is the...

a)

salt

b)

water

13.

to stick together

a)

adhesive

b)

adhere

c)

tension

d)

cohesive

14.

Not able to be dissolved

a)

solute

b)

solvent

c)

insoluble

d)

tension

15.

The tightness across a substance caused by polar molecules pulling on each other.

a)

capillary action

b)

water tension

c)

solvent

d)

surface tension