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WorksheetsCombustion
Total questions: 25
Worksheet time: 33mins
Name
Class
Date
1.
Which of these isn't in the fire triangle?
a)
Fuel
b)
Heat
c)
Oxygen
d)
Carbon dioxide
2.
Another term for burning is
a)
Fire triangle
b)
Magnesium oxide
c)
Combustion
d)
Bustion
3.
Is combustion a reversible reaction?
a)
Yes.
b)
No.
4.
Water is not used to control fires involving electrical appliances.
a)
False
b)
True
5.
A good fuel burns neither too fast nor too slowly.
a)
True
b)
False
6.
Which of the following is not a combustible substance?
a)
Wood
b)
Cow dung cake
c)
stone
d)
paper
7.
Which of these is NOT an essential part of fire.
a)
Fuel.
b)
Friction.
c)
Heat.
d)
Oxygen.
8.
The conditions which are required for combustion to take place are:
a)
fuel
b)
heat
c)
oxygen
d)
all of these
9.
Which one of the following is not a fossil fuel?
a)
Wood
b)
Coal
c)
Petroleum
d)
Natural Gas
10.
Which type of fire extinguisher should be used on a fire involving flammable liquids such as grease or oil?
a)
Water
b)
Carbon Dioxide
c)
Dry Chemical
d)
Foam
11.
What are the contents of fire extinguishers with a black label.
a)
Water
b)
Foam
c)
Carbon dioxide (CO2)
d)
Powder
12.
A compound that contains only carbon and hydrogen and that produces carbon dioxide and water when burned is called a(n)
a)
binary compound
b)
carbonate
c)
ionic compound
d)
hydrocarbon
13.
True or false, bubbling is a sign of a chemical reaction?
a)
True
b)
False
14.
8.7: Combustion is when a __________ reacts with oxygen
a)
petrol
b)
fuel
c)
fire triangle
d)
carbon dioxide
15.
What part of the fire triangle do you remove by spraying water onto a fire?
a)
Heat
b)
Oxygen
c)
Fuel
16.
The word equation for combustion is: fuel + oxygen --> water + ________ __________
a)
Carbon dioxide
b)
Limewater
17.
What do we use limewater to test for?
a)
Carbon dioxide
b)
Water
c)
Heat
d)
Smoke
18.
What are the types of combustion?
a)
Complete & incomplete
b)
Incomplete & inexact
c)
Impossible & complete
d)
Computer & incompete
19.
Complete combustion is when there is plenty of oxygen to react with.
a)
True
b)
False
20.
Incomplete combustion is when there is a limited amount of oxygen.
a)
True
b)
False
21.
What does incomplete combustion produce that complete combustion doesn't?
a)
Carbon monoxide
b)
Water
22.
What is carbon monoxide?
a)
A toxic gas
b)
A large solid
23.
Why do we burn a fuel?
a)
I don't know.
b)
To release energy
c)
To lose energy
d)
To produce carbon dioxide
24.
What is the test for oxygen?
a)
Oxygen extinguishes a burning splint
b)
Oxygen burns with a squeaky pop
c)
Oxygen relights a glowing splint
d)
Oxygen turns limewater cloudy
25.
What is the test for hydrogen?
a)
Hydrogen extinguishes a burning splint
b)
Hydrogen burns with a squeaky pop
c)
Hydrogen relights a glowing splint
d)
Hydrogen turns limewater cloudy
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