Match the following terms and definitions. 1. two or more units are added together to form a new compound decomposition 2. when a reversible reaction is occurring in both directions at the same rate synthesis reaction 3. all of the chemical reactions in the organism for maintenance of the processes of life law of mass action 4. the reactants used to form the products can also be formed from the products chemical equilibrium 5. that which is produced as a result of a chemical reaction exchange reaction 6. the energy required to start a chemical reaction activation energy 7. a chemical reaction in which the substrates trade constituent parts reversible reaction 8. the concentration of reactant product influences the rate and net direction of a reversible reaction metabolism 9. the compound is broken into its constituent parts product