combustion

Which is not combustible substance

• Wood
• Cow dung cake
• stone
• paper

What is produced when combustable substance is in the vapour state and burn strongly in the presence of of air?

• heat 
• light
• flame
• fumes

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion

Why do we burn a fuel?

• To have fun

• To release energy

• To lose energy

• To produce carbon dioxide

What is essential for a combustion reaction to begin?

• Carbon dioxide
• Fuel 
• Fuel, oxygen and heat
• Water and oxygen

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

Which of the following chemical reactions involve combustion?

• A forest fire

• Human digestion

• A car using petrol

• All of the above

Name the most common fuel used in homes.

• Petrol

• Kerosene

• Liquified Petroleum Gas

• Wax