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10 questions
Which one of the following is not a fossil fuel?
Wood
Coal
Petrol
Natural Gas
What do we use limewater to test for?
Carbon Dioxide
Water
Heat
Smoke
Why do we burn a fuel?
To have fun
To release energy
To lose energy
To produce carbon dioxide
What are the products of combustion?
Hydrogen + oxygen
Carbon dioxide + water
Carbon dioxide + hydrogen
Carbon + water
What does this hazard symbol warn of?
The substance is explosive
The substance burns easily
The substance supplies oxygen to fires
The substance puts out fires
Why should you not add water on burning oil?
It makes the fire explode and spread
It puts the fire out too quickly
Water does not put out fires
It takes too long to put out the fire
What does incomplete combustion produce that complete combustion doesn't?
Carbon Monoxide
Water
Heat
Carbon Dioxide
What are the types of combustion?
Complete and incomplete
Incomplete and inexact
Impossible and possible
Computer and incomplete
Which of the following chemical reactions involve combustion?
A forest fire
Human digestion
A car using petrol
All of the above
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