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Physical And Chmical Change Review
Test Description: Utah St 1 ob 1 - 2
Instructions: Answer all questions to get your test result.
1) Which of the following is an example of a chemical property of water? It
A
boils at 100 C
B
has no odor
C
is transparent
D
reacts with calcium
2) Which of the following is an example of a physical property of hydrogen? It
A
is highly flammable
B
forms hydrochloric acid
C
reacts with oxygen
D
is less dense than air
3) Which of the following is true of chemical properties? They
A
explain how the substance reacts with other substances
B
predict how much of the substance is found in the universe.
C
describe the phase the substance is in
D
are measurements of the size or mass of the substance
4) Two students mix vinegar and baking soda. They observe bubbles forming, baking soda dissolving, and vinegar turning cloudy. They infer that a chemical change has occurred. Which data support this inference?
A
vinegar evaporated
B
baking soda dissolved
C
color of vinegar changed
D
bubbles formed
5) Which is a chemical change
A
Reaction with water
B
Density
C
Phase at room temperature
D
Solid
6) Which of the tests measured physical properties?
A
phase, reaction to water
B
density, phase
C
reaction to flame and water
D
density, reaction to flame
7) Which of these substances would be classified as highly flammable?
A
paper, gasoline
B
water, sugar
C
iron, plastic
D
salt, air
8) Which of these substances would be classified as flexible?
A
salt, iron
B
sugar, gasoline
C
water, paper
D
paper, plastic
9) An ice cube is left on a table for an hour. What evidence shows a physical change takes place?
A
It melts into water
B
It bubbles and gives off gas
C
It gives off carbon dioxide
D
It turns into a different substance
10) Salt is mixed with water and stirred. Is this a physical or chemical change?
A
It is physical because the salt has turned into a gas.
B
It is chemical because a new substance, saltwater, has been formed.
C
It is physical because it is easily reversible.
D
It is chemical because a gas, water vapor, is given off.
*select an answer for all questions
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