week2 DQ - water or cooking a egg. When a chemical reaction...

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Exothermic and endothermic reactions are used extensively in everyday life and in industry. Airbags, a safety device in modern cars, utilize an exothermic reaction. Endothermic reactions In these reactions energy is absorbed from the surroundings. The average kinetic energy of the surrounding decreases causing the reaction mixture to get colder. Some examples of endothermic reactions are: the reaction between barium hydroxide and ammonium chloride the reaction between ethanoic acid and sodium carbonate Exothermic and endothermic reactions are used extensively In everyday life and in industry. Airbags, a safety device in modern cars, utilize an exothermic reaction. Endothermic is the a process where energy is absorbed by the system from the surroundings. Examples: Evaporation and melting ice cubes ,evaporating liquid
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Unformatted text preview: water or cooking a egg. When a chemical reaction happens, there can be a net transfer of energy from the reactants into the surroundings (e.g. air, water is in solution) or a net transfer of energy from the surroundings tothe reactants causing a change in average kinetic energy of the particles in the surrounding and a proportional change in the temperature. With a Exothermic reactions the energy is transferred from the reaction system into the surroundings. In thes The average kinetic energy of the surroundings increases causing the reaction mixture to increase in temperature and get warmer. Some examples of exothermic reactions are: Burning ( combustion) Neutralization reactions between acids and alkalis The reaction between water and calcium oxide...
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week2 DQ - water or cooking a egg. When a chemical reaction...

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