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What is endothermic and exothermic reaction ?
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What is endothermic and exothermic reaction ?
Exothermic reaction : An exothermic reaction is a chemical reaction that releases energy in the form of light or heat.It gives net energy to its surroundings. That is, the energy needed to initiate the reaction is less than the energy that is subsequently released.
reactants → products + energy
Examples of exothermic reactions:
Calcium oxide reacts vigorously with water to produce slaked lime(Calcium hydroxide) used in white washing releasing large amount of heat.
Burning of natural gas: when methane reacts with oxygen it releases vast amount of heat and cabon oxide and water.
CH4+2O2------->CO2+H2O
Respiration: During digestion, food is broken down into simpler substances. For example, rice, potatoes and bread contain carbohydrates. These carbohydrates are broken down to form glucose. This glucose combines with oxygen in the cells of our body and provides energy. The special name of this reaction is respiration.
Endothermic reaction : An endothermic reaction is any chemical reaction that absorbs heat from its environment.
reactants + energy → products
Example of endothermic reactions :
Melting of ice: Ice takes heat from the surroundings and turns in to liquid water.
Decomposition of Calcium Carbonate: When limestone is heated at above 900 �C it decomposes into quick lime and releases carbondioxide.
CaCO3(limestone)-------------> CaO(quick lime) + CO2
SilverChloride turns grey when exposed to sunlight.Due to decomposition of silver chloride into silver and chlorine
2AgCl ---------------->2Ag+Cl2
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Most Upvoted Answer
What is endothermic and exothermic reaction ?
Reaction in which heat is envolved are called exothermic reactions. on the other hand, reactions
in which heat is absorbed are called endothermic reactions.
in which heat is absorbed are called endothermic reactions.
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What is endothermic and exothermic reaction ?
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What is endothermic and exothermic reaction ? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What is endothermic and exothermic reaction ? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is endothermic and exothermic reaction ?.
What is endothermic and exothermic reaction ? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What is endothermic and exothermic reaction ? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is endothermic and exothermic reaction ?.
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