Briefly describe what happens during an exothermic reaction and provide an example

In exothermic chemical reactions, the heat that is released by the reaction takes the form of electromagnetic energy or kinetic energy of molecules.

Example : any combustion process, rusting of iron, and freezing of water

exothermic reactions are when reactions release energy into the environment in the form of heat. when this occurs heat is released and has a negative standard enthalpy change. ex: rusting iron or freezing water.

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.