SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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when a bond is broken
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when a bond is made
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Either A or B
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None of the above
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Detailed explanation-1: -Chemical reactions that release energy are called exothermic. In exothermic reactions, more energy is released when the bonds are formed in the products than is used to break the bonds in the reactants. Exothermic reactions are accompanied by an increase in temperature of the reaction mixture.
Detailed explanation-2: -Energy is absorbed to break bonds, and energy is evolved as bonds are made. In some reactions the energy required to break bonds is larger than the energy evolved in making new bonds, and the net result is the absorption of energy.
Detailed explanation-3: -When covalent bonds are broken then energy is consumed and when covalent bonds are formed then energy is released. Bond-making is an exothermic reaction while bond-breaking is an endothermic reaction.