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Some examples of exothermic processes include formation of ice cubes, condensation of rain from vapor, rusting iron, burning sugar and mixing water with acids. Examples of endothermic processes include melting solid salts, cooking an egg, baking bread, water evaporation and melting ice cubes. Continue Reading.
For example; iron + sulphur = iron sulphide (Black fillings) (Yellow powder) = (Black solid) Energy is taken in or given out, during the reaction. A reaction, which gives out heat energy, is known as exothermic (link). A reaction, which takes in heat energy, is endothermic (link). For example: Fireworks are exothermic, as is the reaction above. Frying eggs is an endothermic reaction. Reactions not only produce heat but light and sound. The change is usually difficult to reverse. Several reactions would have to be carried out to get iron and sulphur from iron sulphide. Source(s): http://www.lcc.ukf.net/KS3Chem/chemphych...