Understanding Fire and Combustion

What are the three components of the fire triangle?

• Heat, Fuel, Oxygen

• Water, Fuel, Carbon Dioxide

• Heat, Water, Oxygen

• Fuel, Carbon Dioxide, Nitrogen

What is complete combustion?

• Burning in limited oxygen supply

• Burning that produces smoke and soot

• Burning in sufficient oxygen resulting in water and carbon dioxide

• Burning that only produces carbon monoxide

What is a sign of incomplete combustion?

• A blue flame

• Only water vapor is produced

• The presence of soot or a yellow flame

• Complete conversion of fuel into energy

What is not produced during complete combustion?

• Carbon Dioxide

• Water Vapor

• Carbon Monoxide

• Oxygen

What happens when there is not enough oxygen for complete combustion?

• The fuel does not burn at all

• Complete combustion occurs

• Incomplete combustion occurs

• Only water is produced

Which component of the fire triangle is a reactant with fuel?

• Heat

• Oxygen

• Nitrogen

• Hydrogen

What is typically used to extinguish a fire by removing the heat component of the fire triangle?

• Sand

• Water

• Blanket

• Carbon Dioxide

Why is it dangerous to have incomplete combustion in household appliances?

• It can cause the appliance to overheat

• It can produce toxic gases like carbon monoxide

• It can result in higher energy bills

• It can attract pests like insects and rodents

Fuel + Oxygen --> carbon dioxide + _____

Which of these are true? (tick all which apply)

• Incomplete combustion occurs when fuels burn in limited oxygen

• The reactants of complete combustion are water and carbon dioxide

• fuels need oxygen for combustion

• Carbon dioxide fire extinguishers remove stop fire by removing the 'fuel' part of the fire triangle