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Chemistry · L2 · Bond Energy Balance

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Breaking old bonds always takes energy in and forming new bonds always gives energy out — comparing the two decides whether a reaction is exothermic or endothermic overall.

by @openstemUpdated Chemistry
Old bonds breakEnergy taken INNew bonds formEnergy given OUTWhich is bigger?Exothermic — surroundings warm upEndothermic — surroundings cool downEnergy OUT winsEnergy IN wins

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