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Combustion 7
Test Description: Chemistry combustion
Instructions: Answer all questions to get your test result.
1) Combustion is:
A
An exothermic reaction.
B
A chemical change.
C
All of the choices.
D
Energy producer.
2) The two types of combustion are:
A
Physical change and chemical change.
B
None of the choices
C
Complete and incomplete.
D
Exothermic and endothermic
3) The energy released from exothermic reactions may be:
A
Light.
B
All of the choices.
C
Heat or thermal energy
D
Electrical energy.
4) Carbon monoxide is:
A
Natural Gas.
B
Liquid
C
The silent killer.
D
Healthy
5) Incomplete combustion is:
A
A reaction with carbon dioxide.
B
Endothermic.
C
Exothermic
D
A reaction with enough oxygen.
6) Butane gas is a combustible material found in:
A
Solid.
B
Liquified gas.
C
None of the choices.
D
Liquid
7) Carbon dioxide and carbon monoxide are:
A
Two combustible materials
B
Two combusting agents.
C
Two air pollutants.
D
None of the choices
8) Carbon monoxide is:
A
Odorless.
B
Tasteless.
C
Colorless.
D
All of the choices.
9) The complete combustion of a hydrocarbon produces:
A
Carbon dioxide, water vapor and energy.
B
Carbon monoxide, water vapor and energy.
C
Oxygen, water vapor and energy.
D
Carbon dioxide, oxygen and energy.
10) Wood and charcoal are:
A
Two combusting agents.
B
Two combustible materials
C
Two air pollutants.
D
None of the choices
*select an answer for all questions
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