Combustion is a chemical process where a substance reacts rapidly with oxygen and releases energy in the form of light and heat.
What are the necessary components for combustion to occur?
Combustion requires fuel, oxygen, and heat (ignition source) to start the reaction.
What is the general chemical equation for combustion?
The general chemical equation is: Fuel + O2 -> CO2 + H2O + energy.
What is the difference between complete and incomplete combustion?
Complete combustion occurs when there is enough oxygen to allow the fuel to react completely, forming CO2 and H2O. Incomplete combustion occurs when the oxygen supply is limited, producing CO and/or soot along with CO2 and H2O.
Why is oxygen needed for combustion?
Oxygen provides a reactant that combines with fuel, releasing energy.
What is an ignition temperature?
Ignition temperature is the minimum temperature required to initiate combustion of a particular substance.
What are some examples of combustible materials?
Examples include wood, paper, gasoline, natural gas, and coal.
What is a flame?
A flame is the visible, gaseous part of a fire. It is the result of a combustion process where heat and light are emitted.
What are combustion products?
These are substances formed as a result of combustion, typically including carbon dioxide and water vapor.
What is spontaneous combustion?
Spontaneous combustion is the ignition of material without any direct application of a flame or external heat source.
What is the role of a catalyst in combustion?
A catalyst speeds up the combustion reaction without being consumed itself.
Give one example of a slow combustion reaction.
An example of slow combustion is rusting, which is a form of oxidation that occurs over time.
How does combustion contribute to air pollution?
Combustion can release harmful pollutants such as carbon monoxide, nitrogen oxides, and unburnt hydrocarbons into the air.
What measures can reduce pollution from combustion?
Using cleaner fuels, improving combustion efficiency, and using emissions control technology can reduce pollution.
What is a fire triangle?
The fire triangle is a model that shows the three elements needed for fire: fuel, heat, and oxygen.