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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
reacts with calcium
B
is transparent
C
boils at 100 C
D
has no odor
2) Which of the following is an example of a physical property of hydrogen? It
A
forms hydrochloric acid
B
reacts with oxygen
C
is less dense than air
D
is highly flammable
3) Which of the following is true of chemical properties? They
A
describe the phase the substance is in
B
predict how much of the substance is found in the universe.
C
explain how the substance reacts with other substances
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
color of vinegar changed
B
bubbles formed
C
vinegar evaporated
D
baking soda dissolved
5) Which is a chemical change
A
Density
B
Phase at room temperature
C
Reaction with water
D
Solid
6) Which of the tests measured physical properties?
A
phase, reaction to water
B
density, reaction to flame
C
density, phase
D
reaction to flame and water
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
paper, plastic
B
sugar, gasoline
C
water, paper
D
salt, iron
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 gives off carbon dioxide
C
It bubbles and gives off gas
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 chemical because a new substance, saltwater, has been formed.
B
It is physical because it is easily reversible.
C
It is chemical because a gas, water vapor, is given off.
D
It is physical because the salt has turned into a gas.
*select an answer for all questions
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