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Bonds breaking
Molecules react with eachother and covalent bonds that hold molecules together break
Is energy given in or out during bonds breaking?
In - more energy breaking bonds than products formed
Is bonds breaking an endothermic or exothermic reaction?
Endothermic - temperature decreases
Bonds forming
Atoms rearrange into new products by forming new covalent bonds
Is energy given in or out during bonds forming?
Out - more energy given out when bonds of product are formed
Is bonds forming a endothermic or exothermic reaction?
Exothermic - temperature increases