Question

Combustion of petrol produces heat... Why??

Answer 1

Petrol. are form of carbon as we know when carbon undergoes combustion produces heat and light therefore petrol will produce heat and light if it undergoes combustion

Answer 2

A fuel is a material like wood, coal, gas, or oil that can be burned to produce heat, light, or power. We put gasoline fuel in our cars, burn natural gas on a gas stove, and burn wood on a campfire. It helps us keep warm, cook our food, and transport ourselves quickly to distant locations. But what is it about these fuels that give them this ability? And how does fuel become heat energy?

Fuels contain chemical energy, and that energy is released when you burn them. But how did they get this energy? It all goes back to how they formed, and that's a little different depending on the exact fuel.