A chemist wants to observe the following reaction

2H2+O2->2H2O
The chemist is standing inside a room with oxygen in the air and has a balloon filled with hydrogen. The chemist holds a small flame up to the hydrogen balloon when the balloon pops the hydrogen explodes in a ball of fire.
based on what you know about breaking and forming bonds, explain which part of the reaction is higher and energy. defend your answer in 3 sentences

The formation of the hydrogen-oxygen bond in the product water (H2O) is the higher energy part of the reaction, as energy is released when bonds are formed. The breaking of the hydrogen-hydrogen and oxygen-oxygen bonds in the reactants (H2 and O2) requires energy input to break these bonds. Therefore, the overall reaction is exothermic as more energy is released in forming the new bonds in water than is needed to break the bonds in hydrogen and oxygen.