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articunojaz
Because when a chemical reaction occurs. molecular bonds are broken and other bonds are formed to make different molecules. Like for example: two bonds of water molecules are broken up into hydrogen and water form. Energy is required to break a bond.

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adefioyelaoye

Energy is required to break a covalent bond as a result of its necessity in the

formation of products.

Atoms in a covalent bond are usually much stable as a result of them

achieving the octet configuration. Energy is thereby required to break the

bonds in order to permit the interaction of the electrons of the substances

involved.

The interaction of the electrons is what acts as a precursor in the formation

of new products.

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