WorksheetsCombustion reactions 125
Total questions: 15
Worksheet time: 13mins
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.
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
3.
The total heat output from a combustion reaction is called
a)
Potential Energy
b)
Kinetic Energy
c)
Chemical Potential Energy
d)
Enthalpy
4.
Which of these is NOT an essential part of fire.
a)
Fuel.
b)
Friction.
c)
Heat.
d)
Oxygen.
5.
The word equation for combustion is: fuel + oxygen + heat --> water + ________ __________
a)
Carbon dioxide
b)
Limewater
6.
The unit of enthalpy are _________ and ___________
a)
Kilograms and grams
b)
Celsius and farenheit
c)
Calories and Joules
d)
meters and centimeters
7.
Why do we burn a fuel?
a)
I don't know.
b)
To release energy
c)
To lose energy
d)
To produce carbon dioxide
8.
Complete combustion is when there is plenty of oxygen to react with.
a)
True
b)
False
9.
True or false, bubbling is a sign of a chemical reaction?
a)
True
b)
False
10.
The conditions which are required for combustion to take place are:
a)
fuel
b)
heat
c)
oxygen
d)
all of these
11.
Which of these is NOT an essential part of fire.
a)
Fuel.
b)
Friction.
c)
Heat.
d)
Oxygen.
12.
Which of the following is not a combustible substance?
a)
Wood
b)
Cow dung cake
c)
stone
d)
paper
13.
Is combustion a reversible reaction?
a)
Yes.
b)
No.
14.
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
15.
What are the types of combustion?
a)
Complete & incomplete
b)
Incomplete & inexact
c)
Impossible & complete
d)
Computer & incompete
100 %
