This chapter describes exothermic and endothermic reactions. You will learn to differentiate between heat capacity and specific heat. The use of calorimetry is discussed, along with the use of thermochemical equations and the enthalpy change (H) in chemical reactions. Heat changes also occur during changes of state. This chapter describes heats of fusion and solidification and heats of vaporization and condensation. Finally, the chapter concludes with a discussion of Hess's law, which provides a way to calculate the heat of reaction.

In this chapter, you will learn: to explain the relationship between energy and heat to distinguish between heat capacity and specific heat to calculate heat changes in chemical and physical processes to calculate heat changes that occur during melting, freezing, boiling, and condensation to apply Hess's law of heat summation to calculate heat changes using standard heats of formation