Questions and Answers
What is combustion?
Combustion is a chemical process in which a substance reacts with oxygen to give off heat and light.
Give an example of a combustible substance.
Wood is an example of a combustible substance.
Provide an example of a non-combustible substance.
Sand is an example of a non-combustible substance.
What is fuel in the context of combustion?
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Define ignition temperature.
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Study Notes
Combustion
- Combustion is a chemical process where a substance reacts with oxygen to produce heat and light.
- Burning of wood is an example of combustion.
Combustible and Non-Combustible Substances
- Combustible substances are those that easily catch fire, such as paper, coal, and wood.
- Non-combustible substances are those that do not catch fire readily, such as sand, water, and glass.
Fuel
- Fuel is a substance that produces a usable amount of energy upon combustion.
- Examples of fuels include fossil fuels, biogas, and nuclear energy.
- Fuels can exist in solid, liquid, or gas states, depending on their physical form.
- Fuels can be either natural or artificial, based on their occurrence.
Ignition Temperature
- Ignition temperature is the lowest temperature at which a combustible substance catches fire when heated in air.
- It is a specific temperature unique to each combustible substance.
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