Preview - Energy In Chemical Reactions

What if the number of bonds broken and formed are identical?

As it turns out, all bonds are not created equal. Some bonds have more energy associated with them than others. A stronger, more energetic bond requires more energy to be broken, and releases more energy when it is formed. The end of the video below shows an example chemical reaction where two bonds are broken and two bonds are formed.

Referenced Questions

These questions were answered in the previous steps. They are provided here for your reference.

Count the number of bonds broken in the reactants versus the new bonds formed in the products to determine if the reaction is endothermic or exothermic.

2Al + Fe2O3 → 2Fe + Al2O3

 

Notes

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