100 100
200 200
400 400
300
400
Water 1 MC
Water 2 MC
Water 3 Water 4
300 300 300
200
400
200
100
500 500 500 500
100
100
The cohesive forces in water are also called
a. Covalent bonds
b. Hydrogen bonds
c. Ionic bonds
d. Adhesion
B
100
In a water molecule…
a. The oxygen has a partial positive charge
b. The hydrogens have a partial negative charge
c. The oxygen has a full negative charge
d. The hydrogens have a partial positive charge
D
100
The kind of covalent bond where the electrons are not
shared equally because one ofthe atoms “hogs” the electrons.
What is a POLAR covalent bond?
200
TRUE or FALSE: Hydrogen bonds are attractive forces that hold water molecules
close to each other.
TRUE
200
The property of water responsible for creating a meniscus in a cylinder of
water.
What is adhesion?
200
The property of water that allows fish to stay aliveat the bottom of a pond
in the winter.
What is water expands when frozen?
300
In the following image of a cellular protein, the area indicated by the arrow is most likely …(Remember! Cells are comprised mainly of water!)
a. Hydrophilicb. Hydrophobicc. Non-polard. Metallic
A
300
What property of water allows trees to transport water from the roots all the way up to the leaves?
a. Cohesionb. Adhesionc. Evaporationd. All of the above
D
400
A paper clip can float on water because ofa. Surface tension
b. Cohesionc. Hydrogen bondsd. All of the above
D
400
When water is heated, most of the energy that the water initially absorbs is used to…
a. Break the covalent bonds between the hydrogen and oxygen atoms in water
b. Make the water evaporatec. Break the hydrogen bonds between the
water moleculesd. Raise the temperature of the water
C
400
The name for the sphere of water molecules surrounding the
ion below.
What is a hydration sphere?
500
In humans, one of the ways that we maintain homeostasis is by keeping our temperature at about 98.6 degrees Fahrenheit. Water helps us to keep our temperature constant because it has
a. Ionizationb. Cohesionc. High specific heatd. Adhesion
C
500
Water is a very lightweight molecule. It’s so light, in fact, that we would expect it to be a
gas at room temperature. The only reason that water exists as a liquid at
room temperature is because of a. Adhesionb. Cohesionc. Ionization
d. Thermal capacity
B
500
Classify EACH of the following as either hydrophobic or hydrophilic:
Glass:Wax:Oil:
Cotton:
Glass: philic; Wax: phobic; Oil: phobic; Cotton: philic