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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
None of the choices
B
Toxic.
C
The combusting agent.
D
Combustible material.
2) Photosynthesis is:
A
Exothermic.
B
None of the choices.
C
Endothermic.
D
Physical change.
3) Respiration is:
A
Exothermic.
B
Endothermic
C
Same as photosynthesis.
D
Physical change.
4) Oxygen:
A
Isa constituent of air.
B
Forms 21% of air.
C
All of the choices.
D
Is the combusting agent.
5) Diesel is a combustible material in the:
A
A mixture of all.
B
Solid state.
C
Gaseous state.
D
Liquid state.
6) Exothermic reactions involve:
A
No heat exchange.
B
Cooling down.
C
Absorption of heat.
D
Release of heat.
7) Endothermic reactions involve:
A
Cooling down.
B
Production of fire.
C
Production of electricity.
D
Release of heat.
8) Breaking glass is:
A
Chemical change.
B
Physical change.
C
Exothermic.
D
Endothermic.
9) Burning of propane is:
A
An endothermic reaction.
B
An exothermic reaction.
C
None of the choices.
D
A physical change.
10) Carbon monoxide is:
A
Colorless.
B
All of the choices.
C
Odorless.
D
Tasteless.
*select an answer for all questions
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