Administer a test on chapter 7 material. Begin a discussion of chemical energy and ATP. Determine how energy is required for all life functions. List common forms of energy and then concentrate on the chemical energy required for cells. Describe how chemical energy is stored in the bonds between atoms when compounds are formed. Determine that the energy stored from synthesis of the compounds is released when the bonds are broken. Describe wax as a lipid, and how wax releases energy as the wax molecules burn and form lower energy molecules. View a diagram of ATP, and note each of the 3 major chemical sections. Indicate that the last phosphate bonds are high energy bonds.