Best answer


It takes more energy to breakthe bonds of the reactants because a lot of heat is given off, which indicates energy was absorbed in the beginning. More energy is released when forming the bonds of the products because yellow light is given off, which indicates energy was released.

People also ask


  • Does it take energy to break a chemical bond?

  • In all types of chemical reactions, bonds are broken and reassembled to form new products. However, in exothermic, endothermic, and all chemical reactions, it takes energy to break the existing chemical bonds and energy is released when the new bonds form. Breaking Bonds 鈫?Energy Absorbed

  • Why does it take so long to break a bond?

  • That is because bonds must be broken before the atoms can be formed into new bonds, and it always takes energy to break bonds. Once the reaction has started, the output energy from one burned methane molecule becomes the input energy for the next molecule.

  • What is the bond energy of a bond?

  • Bond Energy. The formation of bonds is an exothermic process and needs to release an amount of energy to the surrounding , So , its 螖H has a negative sign . The Algebraic sum of absorbed and released energies during the chemical reaction represents the change in heat content of this reaction 螖H .

  • What happens to energy when bonds break in endothermic reactions?

  • In endothermic reactions, more energy is absorbed when the bonds in the reactants are broken than is released when new bonds are formed in the products. Endothermic reactions are accompanied by a decrease in temperature of the reaction mixture.

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