Video Transcript
Consider the chemical reaction
equation shown. H plus H react to form H single
bond H. Is this reaction endothermic or exothermic?
The reaction equation shows that
we’re forming a bond between two hydrogen atoms, so this is an example of bond
formation. Generally, energy is released to
the surroundings when bonds are formed. In an endothermic reaction, energy
is absorbed. And in exothermic reaction, energy
is released. Therefore, in this reaction, since
we are only forming a single bond and we are breaking no bonds at all, this reaction
is exothermic.
