what does one mean by exothermic and endothermic reactions? Give examples.
Answers
Answer:
Reaction in which heat energy is liberated by the reactants is called exothermic reaction. eg: Carbon + Oxygen gives Carbon Dioxide + Q. reaction in which heat energy is absorbed by the reactants is called endothermic reaction
Answer:
Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products. Physical processes can be endothermic as well – Ice cubes absorb heat energy from their surroundings and melt to form liquid water
the bursting of a firecracker gives out a loud noise in addition to light and heat, being one of the best examples of an exothermic reaction. Lighting a candle – this is a continuous reaction where the wax acts as fuel and creates a flame for a long period of time.