<P> A chemical reaction is a process that leads to the transformation of one set of chemical substances to another . Classically , chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms , with no change to the nuclei ( no change to the elements present ) , and can often be described by a chemical equation . Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur . </P>
<P> A chemical reaction is a process that leads to the transformation of one set of chemical substances to another . Classically , chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms , with no change to the nuclei ( no change to the elements present ) , and can often be described by a chemical equation . Nuclear chemistry is a sub-discipline of chemistry that involves the chemical reactions of unstable and radioactive elements where both electronic and nuclear changes can occur . </P>
what happened to chemical bonds during chemical reactions
what happened to chemical bonds during chemical reactions
forming and breaking
forming and breaking