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Unit 4A: Sources, Uses, And Properties Of Water
Test Description: Use this question set to help you practice for the Unit 4A test.
Instructions: Answer all questions to get your test result.
1) Which statement explains why water has such a high melting and boiling point?
A
Strong attractions exist between water molecules.
B
Water is much more dense than air.
C
Water can exist as a gas at room temperature.
D
Weak bonds connect the atoms in water molecules.
2) List the 3 phases of water in order from most to least dense.
A
solid, liquid, gas
B
liquid, solid, gas
C
gas, liquid, solid
D
gas, solid, liquid
3) Which statement about water is FALSE?
A
The oxygen end of water has a partial negative charge.
B
Water has a high boiling point.
C
Water molecules have ionic bonds.
D
Water molecules strongly attract each other.
4) Which of the following is not a PHYSICAL property of water?
A
The boiling point of water is 100 degrees C.
B
Water vapor reacts with sulfur dioxide in the atmosphere to make acid rain.
C
The melting point of water is 0 degrees C.
D
Water is a polar solvent.
5) What causes a bottle of soda to burst in the freezer?
A
The bottle contracts when it freezes.
B
The bottle expands when it freezes.
C
The water in the bottle contracts when it freezes.
D
The water in the bottle expands when it freezes.
6) What is the median value of the following set of numbers: 2, 4, 5, 7, 8, 10
A
6
B
7
C
8
D
5
7) Water-based solutions are called
A
acidic solutions
B
aqueous solutions
C
compounds
D
mixtures
8) Which pair forms a homogeneous mixture?
A
oil and vinegar
B
sugar and water
C
oil and water
D
sand and water
9) Solutions are always
A
colorless
B
heterogeneous
C
aqueous
D
homogeneous
10) Heterogeneous mixtures include
A
suspensions only
B
solutions only
C
colloids only
D
both colloids and suspensions
11) Which of the following is a solution?
A
vinegar
B
pure water
C
italian salad dressing
D
milk
12) A salt compound is added to pure alcohol. There is no settling and no Tyndall effect. It is most likely a(n)
A
element
B
solution
C
suspension
D
colloid
13) A sample is dark brown in color when shaken, but quickly settles out into 2 layers and shows the Tyndall effect. It is a
A
suspension
B
solution
C
compound
D
colloid
14) More than 97% of Earth's water is found in
A
glaciers and ice caps
B
groundwater
C
oceans
D
lakes and rivers
15) Most of Earth's freshwater is located in
A
lakes and rivers
B
glaciers and ice caps
C
groundwater
D
rainfall
16) Which is an example of direct water use?
A
the water used to manufacture cars
B
the water it took to produce the meat in a hamburger
C
the water used to flush a toilet
D
the water used to make a piece of paper
17) Which is an example of indirect water use?
A
It took 120 liters of water to make a 1.3 liter bottle of juice.
B
A water-saving toilet uses 1.28 gallons per flush.
C
An old shower uses 19 liters of water per minute.
D
A family's water bill was $58.50 last month.
18) Most of Earth's accessible freshwater, and the most common source for rural households, comes from
A
groundwater
B
oceans
C
glaciers and ice caps
D
rivers and lakes
19) Why is water considered a polar molecule?
A
because O is much more electronegative than H
B
because H is much more electronegative than O
C
because electrons are completely transferred from H to O
D
because electrons are completely transferred from O to H
20) Which of the following is NOT a heterogeneous mixture known as a colloid?
A
milk
B
fog
C
paint
D
gelatin
*select an answer for all questions
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