What is the difference between endothermic and exothermic And give examples?

Answer 1

Chemical reactions that release energy in the form of heat, light, or sound are called exothermic reactions.

Example: Mixture of sodium and chlorine to yield table salt

In other words, combination reactions are exothermic.

Reactions that absorb energy or require energy in order to proceed are called endothermic reactions.

For example: In the process of photosynthesis, plants use the energy from the sun to convert carbon dioxide and water to glucose and oxygen.

Answer 2

To put it simply, an exothermic reaction is a chemical reaction in which energy is released in the form or light or heat. If the reactant (A) has more energy than the products (B and C) of a chemical reaction, then the excess energy will released and you have an exothermic reaction. When you digest food, energy is released for your body to use. Combustion reactions (fire) and the explosions of bombs are also good examples of exothermic reactions.

So:

If A ≠ B + C, then

A = B + C + Excess Energy

Endothermic reactions, on the other hand, absorb heat. You can notice this when ice melts and when ammonium nitrate is dissolved in water (which is used to create commercial cold/ice packs).

Answer 3

An exothermic reaction is a reaction that gives off heat. For instance, when wood burns heat that was stored in chemical bonds is given off into the environment.

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An endothermic reaction is a reaction that stores heat. For example, reacting citric acid and baking soda.

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The above examples are chemical reactions. There are also endothermic and exothermic physical reactions. For instance, boiling water or melting ice cubes is and endothermic reaction because it takes heat to do it, and that heat is stored. Also, dissolving salts can be both endothermic and exothermic (depending on the salt used.)