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Water

Total questions: 20

Worksheet time: 29mins

Name
Class
Date
1.

Why can water have no net charge but have slight charges in different parts of the molecule?

a)

The oxygen end is slightly negative and the hydrogen end is slightly positive so they equal each other

b)

The hydrogen end is slightly negative and the oxygen end is slightly positive so they equal each other

c)

The hydrogen and oxygen ends change in polarity

d)

Because it is hydrophobic and hydrophobic molecules always have no net charge

2.

The attraction between two water molecules is caused by ______,

a)

Covalent bonds

b)

Ionic bonds

c)

Polar bonds

d)

Hydrogen bonds

3.
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
4.

"Water Loving" is referred to as _______.

a)

Hydrophobic

b)

Hydrophilic

c)

Hydroelectric

d)

Hydroloric

5.

How many bonds does carbon need to form to be stable?

4 lines
6.

Which of the following compounds is not organic?

a)

CH4

b)

CO

c)

C2H2

d)

C5H12O2

7.

The property where water molecules are attracted to other water molecules.

4 lines
8.

The property where water molecules are attracted to other types of molecules (surfaces).

4 lines
9.

The property where water can dissolve almost all substances on Earth.

4 lines
10.

The property where water can pull itself up tubes or through spaces in paper or fabrics.

4 lines
11.
Why can some insects walk on water?
a)
The water sticks to the insect.
b)
The insect is too light to break the surface tension.
c)
The insect has hydrophobic oils on its legs.
d)
Insects can't walk on water.
12.
A water molecule is polar. Its bent shape results in the following...
a)
slightly positive charge on hydrogen and slightly negative charge on oxygen
b)
slightly positive charge on hydrogen and slightly  positive charge on oxygen
c)
slightly negative charge on hydrogen and slightly positive charge on oxygen
d)
no change because its neutral
13.
What property of water is being shown?
a)
solution
b)
adhesion
c)
freezing point
d)
specific heat
14.
What property of water is being shown?
a)
adhesion
b)
hydrogen bonds
c)
freezing point
d)
capillary action
15.
What property of water is being shown?
a)
cohesion
b)
adhesion
c)
polarity
d)
freezing point
16.
What property of water is being shown?
a)
polarity
b)
freezing point
c)
hydrogen bonds
d)
solution/universal solvent
17.

Which combination when referring to salt water is correct in terms of solutes/solvents?

a)

solute: table salt solvent: salt water

b)

solute: table salt solvent: water

c)

solute: water solvent: table salt

d)

solute: saltwater solvent: water

18.
What property of water is being shown?
a)
cohesion
b)
adhesion
c)
freezing point
d)
capillary action
19.
What property of water is being shown?
a)
cohesion
b)
specific heat
c)
capillary action
d)
hydrogen bonds
20.

What is the name of Mr. Xiao's Dog?

a)

Dumpling

b)

Boba

c)

Oreo

d)

Ducky