wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Combustion and Fossil Fuels

Total questions: 30

Worksheet time: 20mins

Name
Class
Date
1.

What is a fuel?

a)

Any substance that can provide heat and produce energy when it is burned

b)

Some energies can be created and destroyed

c)

The tools that provide the heat

d)

Heat energy made by human

2.

Fossil fuel is an energy providing material that comes from

a)

long-dead remains of living things.

b)

the center of the Earth.

c)

out space.

d)

the atmosphere.

3.

Which of the following is NOT a fossil fuel.

a)

coal

b)

carbon dioxide

c)

petroleum oil

d)

natural gas

4.

The fuel used in power plants to make electricity is

a)

natural gas.

b)

petroleum oil.

c)

coal.

d)

water.

5.

Most energy modern people use comes from

a)

nuclear power.

b)

using wind energy.

c)

using the sun's energy.

d)

burning fossil fuels.

6.

Heat and _____________ transformed living things into fossil fuels.

a)

pressure

b)

air

c)

gas

d)

water

7.

Fossil fuels are a _______________________.

a)

renewable resource

b)

unknown resource

c)

nonrenewable resource

d)

new resource

8.

The supply of fossil fuels is NOT rapidly depleting.

a)

true

b)

false

9.

Burning fossil fuels causes ____________ and ____________.

a)

acid rain

b)

clean air

c)

air pollution

d)

clean cities

10.

_____________ and ____________ trap heat in Earth's atmosphere.

a)

oxygen

b)

carbon dioxide

c)

greenhouse gases

d)

nitrogen

11.
What is essential for a combustion reaction to begin?
a)
Carbon dioxide
b)
Fuel 
c)
Fuel, oxygen and heat
d)
Water and oxygen
12.
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
13.
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
14.
The initial energy required to start a combustion reaction is called
a)
Potential Energy
b)
Kinetic Energy
c)
Chemical Potential Energy
d)
Activation Energy
15.

8.7: Combustion is when a __________ reacts with oxygen

a)

petrol

b)

fuel

c)

fire triangle

d)

carbon dioxide

16.
What are the types of combustion?
a)
Complete & incomplete
b)
Incomplete & inexact
c)
Impossible & complete
d)
Computer & incompete
17.
Incomplete combustion is when there is a limited amount of oxygen.
a)
True
b)
False
18.
Is combustion a reversible reaction?
a)
Yes.
b)
No.
19.
The word equation for combustion is:
fuel + oxygen -->
 water + ________ __________
a)
Carbon dioxide
b)
Limewater
20.
All combustion reactions are 
a)
endothermic
b)
exothermic
c)
neutral
d)
fast
21.
100ml of water is heated by the combustion of 10g of coal. The temperature of the water increases by 10 degrees. What is the approx enthalpy  for this  reaction 
a)
4.18 kJ per gram
b)
41.8 kJ per gram
c)
418 kJ per gram
d)
0.418 kJ per gram
22.

Combustion is needed for __________________ inside your body.

a)

photosynthesis

b)

cellular respiration

c)

mitosis

23.

Exothermic reactions release heat into the surroundings, so you observe a...

a)

temperature increase

b)

temperature decrease

c)

no temperature change

24.

True or False: Combustion is needed for cars that run on gasoline to move.

a)

True

b)

False

25.

Which of the following is a toxic gas produced during incomplete combustion that reduces the oxygen-carrying capacity of the blood?

a)

carbon dioxide

b)

oxides of nitrogen

c)

sulfur dioxide

d)

carbon monoxide

26.

What are the products of the complete combustion of hydrocarbons? Tick all that apply.

a)

carbon particulates

b)

carbon dioxide

c)

carbon monoxide

d)

water

27.

Which one is not types of fuel?

a)

Solid Fuels

b)

Liquid Fuels

c)

Water Fuels

d)

Gaseous Fuels

28.

What is the disadvantages of liquid fuels?

a)

Burn without ash

b)

Controlling the combustion is easier

c)

Greater risk of fire hazards.

d)

Transportation easier through pipes

29.

What is the advantage of gaseous fuels?

a)

Clean after use

b)

More expensive

c)

Busy to transport

d)

Require special burner technology

30.
Distillation occurs where crude oil is separated into fuels by
a)
mixing it with corn starch and letting it settle
b)
putting it under intense pressure until it becomes solid
c)
heating it to different boiling points
d)
removing the sulfur particles from it