what do you mean by endothermic and exothermic reaction
Exothermic reaction An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction.[1]
In situ In chemistry, in situ typically means "in the reaction mixture."
Fire Once ignited, a chain reaction must take place whereby fires can sustain their own heat by the further release of heat energy in the process of combustion and may propagate, provided there is a continuous supply of an oxidizer and fuel.
Economic nationalism While the coining of the term "