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Water Properties
Test Description: Water's Unique Properties
Instructions: Answer all questions to get your test result.
1) Water molecules are polar, with the
A
oxygen side being slightly positive and the hydrogen side being slightly negative
B
oxygen side being slightly negative and the hydrogen side being slightly positive.
C
oxygen and hydrogen sides being slightly positive
D
oxygen and hydrogen sides being slightly negative
2) If “like dissolves like,” then which molecule or substance would water NOT be able to dissolve?
A
Water can dissolve everything
B
An ionic molecule
C
A nonpolar molecule
D
A polar molecule
3) Why does ice float in water?
A
Ice will only float at very cold temperatures
B
Water is less dense as a solid than it is as a liquid
C
Adhesion causes ice to stick to water
D
Water is more dense as a solid than it is as a liquid
4) What kinds of bonds can form between two adjacent water molecules?
A
Hydrogen
B
Ionic
C
Polar Covalent
D
Covalent
5) Which statement best describes an effect of the low density of frozen water in a lake?
A
Water removes thermal energy from the land around a lake, causing the lake to freeze
B
When water in a lake freezes, it floats, providing insulation for organisms below
C
Water in a lake freezes from the bottom up, killing most aquatic organisms
D
When water freezes, it contracts, decreasing the water level in a lake.
6) Which of the following is a property of water that allows a water strider to walk on the surface of water?
A
solubility
B
high specific heat
C
cohesion
D
low freezing point
7) Which property of water allows it to dissolve many different substances?
A
high specific heat
B
adhesion
C
high boiling point
D
cohesion
8) Which statement describes an example of capillary action?
A
An insect walks on the surface of a pond
B
Water enters the atmosphere from the surface of the ocean
C
Sodium chloride dissolves in water
D
A tree draws water through tubes of tissues to supply its leaves
9) The unique properties of water result mainly from the polarity of its molecules. Which statement BEST describes this polarity?
A
A water molecule has two magnetic poles, a north pole and a south pole.
B
The oxygen side of a water molecule has a different electrical charge from the hydrogen side
C
Some water molecules attract each other, and some repel each other
D
The oxygen side of one water molecule repels the hydrogen side of another water molecule
10) Which property of water allows fallen leaves to float on a lake, providing food for organisms living near its surface?
A
adhesion
B
cohesion
C
capillary action
D
high boiling point
11) What type of bond occurs between the Hydrogen and Oxygen in a single water molecule?
A
Ionic
B
Hydrogen
C
Metallic
D
Polar Covalent
12) What charge do the hydrogen atoms in water have?
A
Slightly Positive
B
Slightly Negative
C
Neutral
D
Strongly Negative
13) What property of water is defined as water molecules sticking together?
A
Polar
B
Adhesion
C
Cohesion
D
Acidic
14) Which term means 'water-fearing' or 'water-hating?'
A
Hydrolysis
B
Hydropolar
C
Hydrophobic
D
Hydrophilic
*select an answer for all questions
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