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