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WorksheetsExploring Reaction Energy
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
What is essential for a combustion reaction to begin?
a)
Carbon dioxide
b)
Fuel
c)
Fuel, oxygen and heat
d)
Water and oxygen
2.
What kind of energy conversion does a combustion reaction involve?
a)
Kinetic to Potential Energy
b)
Chemical Potential Energy to Kinetic or Thermal Energy
c)
Potential Energy to Nuclear Energy
d)
Mass to Energy
3.
Which of the following chemical reactions involve combustion?
a)
A forest fire
b)
Human digestion
c)
A car using gasoline
d)
All of the above
4.
Usually , what kind of chemical compounds are fuels in a combustion reaction?
a)
Food
b)
Metals such as Magnesium
c)
Hydrocarbons such as fossil fuels
d)
All of the above
5.
The total heat output from a combustion reaction is called
a)
Potential Energy
b)
Kinetic Energy
c)
Chemical Potential Energy
d)
Enthalpy
6.
Matter that has a definite shape and volume.
a)
solid
b)
liquid
c)
gas
d)
plasma
7.
Which of these is NOT an essential part of fire.
a)
Fuel.
b)
Friction.
c)
Heat.
d)
Oxygen.
8.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
9.
In an endothermic reaction the energy level of products are lower than the reactants
a)
True
b)
False
10.
What is evaporation?
a)
Solid to liquid transformation
b)
liquid to gas transformation
c)
gas to liquid transformation
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