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Physical/ Chemical Properties And Changes
Test Description: Review for quiz
Instructions: Answer all questions to get your test result.
1) Which most likely indicates formation of a precipitate during the reaction of two liquids?
A
the temperature of the liquids changing
B
the liquids changing colors
C
gas bubbles appearing in the liquid
D
a solid appearing in the liquid
2) When water boils, water vapor is produced and escapes into the air. Which best describes this change?
A
solidification
B
physical change
C
melting
D
chemical change
3) Which is represented when liquid water becomes a gas at 100°C?
A
boiling point of water
B
solubility of water
C
density of water
D
chemical reactivity of water
4) Which demonstrates a chemical change ?
A
White sugar+ clear acid = black solid
B
Red food coloring + yellow food coloring = orange solution
C
Water + salt = saline solution
D
Water+ blue food coloring = blue solution
5) Which occurs when a precipitate forms during a chemical reaction?
A
temperature change
B
color change
C
production of a solid
D
production of a gas
6) A marshmallow is made mostly of sugar and air. When heated in a microwave oven, a marshmallow increases in size to nearly twice its normal volume but does not produce any new substance.
A
The heated air expands as a chemical change occurs.
B
The heated air expands as a physical change occurs.
C
The heated air expands as a chemical change occurs.
D
The heated air contracts as a physical change occurs.
7) Which best describes the type of change that occurs when liquid water freezes to become ice?
A
physical change in which the ice is less dense than the liquid water
B
physical change in which the ice is more dense than the liquid water
C
chemical change in which the ice is more dense than the liquid water
D
chemical change in which the ice is less dense than the liquid water
8) Liquids placed in a beaker will settle in specific layers. Which physical property of matter does this illustrate?
A
polarity
B
solubility
C
malleability
D
density
9) A sea creature releases a liquid into the ocean that reacts with the water to form a seashell. Which process does this represent?
A
precipitate formation
B
freezing
C
change of state
D
gas formation
10) Which best describes a substance that changes from a liquid to a solid?
A
The substance gains volume.
B
The substance undergoes a physical change.
C
The substance undergoes a chemical change
D
The substance gains mass.
*select an answer for all questions
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