Combustion Quiz

The reaction where substances give off heat and light in the presence of oxygen

Capability to catch fire and burn

They have a lower ignition temperature

<p>Presence of a combustible substance, air, and heat</p> Signup and view all the answers

<p>Kerosene evaporates more easily than coal</p> Signup and view all the answers

<p>burning</p> Signup and view all the answers

<p>combustible</p> Signup and view all the answers

<p>burn</p> Signup and view all the answers

<p>combustion</p> Signup and view all the answers

<p>fuels</p> Signup and view all the answers

<p>More care is needed to store kerosene than coal because kerosene is a liquid fuel and highly flammable, whereas coal is a solid fuel and less prone to accidental ignition.</p> Signup and view all the answers

<p>The burning of substances in the presence of oxygen gives off heat and light, which is known as combustion.</p> Signup and view all the answers

<p>Combustible Substances: 1. The substances that are capable of catching fire and burning are known as combustible substances. 2. Examples: Coal, petrol, diesel, etc. Non-combustible Substances: 1. The substances that are not capable of catching fire and burning are known as non-combustible substances. 2. Examples: Stone, water, etc.</p> Signup and view all the answers

<p>It is more difficult to burn some combustible substances than others because different substances catch fire at different temperatures. Some substances have a low ignition temperature, therefore, they can catch fire more easily than others. Ignition temperature plays a crucial role in determining the combustibility of different substances.</p> Signup and view all the answers

<p>Combustion of a fuel requires: Presence of a combustible substance such as coal, natural gas, wood, etc. Presence of air to supply oxygen Availability of heat to raise the temperature of the fuel beyond its ignition temperature</p> Signup and view all the answers