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21 February, 19:27

Why is energy needed to break chemical bonds

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  1. 21 February, 19:36
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    Chemical bonds are electromagnetic in nature, the same way that energy is needed to lift any object.
  2. 21 February, 19:48
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    Whether a reaction is endothermic or exothermic depends on the difference between the energy needed to break bonds and the energy released when new bonds form. If more heat energy is released when making the bonds than was taken in when they broke, the reaction is exothermic.
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