What are some exothermic processes examples?

Answer 1

exothermic: endothermic:

making ice cubesmelting ice cubesformation of snow in cloudsconversion of frost to water vaporcondensation of rain from water vaporevaporation of watera candle flameforming a cation from an atom in the gas phasemixing sodium sulfite and bleachbaking breadrusting ironcooking an eggburning sugarproducing sugar by photosynthesisforming ion pairsseparating ion pairsCombining atoms to make a molecule in the gas phasesplitting a gas molecule apartmixing water and strong acidsmixing water and ammonium nitratemixing water with an anhydrous saltmaking an anhydrous salt from a hydratecrystallizing liquid salts (as in sodium acetate in chemical handwarmers)melting solid saltsnuclear fissionreaction of barium hydroxide octahydrate crystals with dry ammonium chloridemixing water with calcium chloride

Answer 2

An exothermic change is any change that gives off energy in the process most likely thermal energy. Combustion is a chemical change that releases energy in the form of heat and light. Condensation is the change of state from a gas to a liquid. In the process of condensation the rapidly moving gas molecules loose enough energy to slow them down so much that they change into much slower liquid molecules. In this process the gas loses energy or gives it off so it is also an exothermic change. Lastly another simple example of an exothermic change is the hardening of concrete. It is similar to the above stage of condensation but it begins as a liquid and give off so much energy that its particles become set in a fixed pattern (otherwise known as a crystalline solid) and become, packed together very tightly. Concrete also has a set melting point (also supporting the fact concrete is a crystalline solid), it does not become softer as the temperature rises (like amorphous solids do: butter, plastic, glass, and more).

Answer 3

• Combustion of fuels such as wood, gas, or coal
• Rusting of iron
• Neutralization reactions between an acid and a base
• Freezing of water to form ice

Answer 4

A firework exploding, because it gives off heat as a source of energy so that it can errupt into the air.

Answer 5

in order for an exothermic reaction to take place, it must expel (release) energy, for example;

burning wood

freezing water

turning on a flashlight

Answer 6

Respiration (glucose + oxygen ---> energy + carbon dioxide + heat); combustion of fuels; and neutralization reactions between acids and alkali's.

Answer 7

Mixing ethanol with water is an exothermic process.

Answer 8

When something lights on fire.