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:chemical Reactions Complete Combustion 7
Test Description: This game aims to review (Chemical Reactions) and (Complete Combustion)courses for Grade 7 students.
Instructions: Answer all questions to get your test result.
1) Oxygen is:
A
Combustible material.
B
The combusting agent.
C
Toxic.
D
None of the choices
2) Photosynthesis is:
A
Physical change.
B
Exothermic.
C
Endothermic.
D
None of the choices.
3) Respiration is:
A
Exothermic.
B
Physical change.
C
Endothermic
D
Same as photosynthesis.
4) Oxygen:
A
Is the combusting agent.
B
All of the choices.
C
Isa constituent of air.
D
Forms 21% of air.
5) Diesel is a combustible material in the:
A
A mixture of all.
B
Gaseous state.
C
Solid state.
D
Liquid state.
6) Exothermic reactions involve:
A
Cooling down.
B
No heat exchange.
C
Absorption of heat.
D
Release of heat.
7) Endothermic reactions involve:
A
Production of electricity.
B
Release of heat.
C
Cooling down.
D
Production of fire.
8) Breaking glass is:
A
Exothermic.
B
Endothermic.
C
Physical change.
D
Chemical change.
9) Burning of propane is:
A
A physical change.
B
An endothermic reaction.
C
None of the choices.
D
An exothermic reaction.
10) Carbon monoxide is:
A
Colorless.
B
Tasteless.
C
All of the choices.
D
Odorless.
*select an answer for all questions
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