How do endothermic and exothermic differ?

Answer 1

Exothermic reactions release energy (usually as heat) into the surrounding environment - endothermic reactions absorb energy from the surrounding environment. Note that exothermic reactions are capable of turning into runaway reactions as the heat of reaction often speeds up the rate of reaction (releasing more heat, etc). Endothermic reactions are, usually, self moderating as a limited amount of energy is capable of being drawn from the surrounding environment.

Answer 2

Simply put, the difference between endothermic and exothermic reactions is one takes in energy, the other releases it. The energy is usually, but not always, thermal energy (heat). Endothermic reactions occur much less frequently than exothermic ones. You need to constantly feed an endothermic rxn' in order for it to completely react. An example would be baking or cooking, where you are adding heat until everything has reacted. Reactants + energy --> products. Exothermic reactions happen when two (or more) reactants come together and release energy during their rxn'. An example of an exothermic would be combustion (an explosion), where you can clearly see a release of energy. Reactants --> products + energy.

Answer 3

An exothermic reaction is one that liberates or gives off heat to the surroundings. In an endothermic reaction, heat must be supplied from the surrounding to the system. In an exothermic reaction, the solution or beaker or surroundings get warmer. In an endothermic reaction, the solution, beaker or surrounding get cooler.

Answer 4

An endothermic reaction is a chemical reaction that absorbs more energy than it releases. An exothermic reaction is a chemical reaction that releases more energy than it absorbs.

Answer 5

Endothermic reactions require heat energy while exothermic reactions give off heat energy.

Answer 6

Endothermic- absorbs energy

Exothermic- gives off energy

Answer 7

direction of energy flow