This is a long sequence of questions that develops the concept of exothermic and endothermic reactions. It begins with basic definitions and applying those concepts to synthesis and decomposition reactions. The concept of Energy-time graphs is discussed in detail which then leads into questions about enthalpy and the change in energy of a reaction system. The sequence ends with 2 industrial applications about reducing CO2 emissions and producing hydrogen for hydrogen cars.
chemical bonds, chemical equations, chemical potential energy, chemistry 11-12, endothermic, energy changes, energy-time graphs, enthalpy, exothermic, industrial applications