Question

By giving example define the following terms:

1. Inflammable substances
2. Supporter of Combustion
3. Ignition temperature

Answer 1

Inflammable substances

• Inflammable substances are those substances which catch fire very easily and their ignition temperature is very low.
• Examples: for inflammable substances are alcohol, petrol, liquefied petroleum gas etc.

Supporter of Combustion

• Combustion is a process where a substance burns in presence of oxygen, giving off heat and light.
• Oxygen supports combustion hence it is called a supporter of combustion.
• Example: Combustion of coal takes place in the presence of oxygen.

Ignition temperature

• It means that a substance is at the lowest temperature at which it spontaneously ignites in a normal atmosphere without an external source of ignition.
• It is also the minimum temperature at which the substance catches fire for spontaneous combustion.
• Example: Candle flame and fire.