Chapter 5 Thermochemistry James F. Kirby Quinnipiac University Hamden, CT Lecture Presentation ? 2015 Pearson Education, Inc. 1 Energy Energy is the ability to do work or transfer heat. Energy used to cause an object that has mass to move is called work. Work = force x distance W = f x d Energy used to cause the temperature of an object to rise is called heat. This chapter is about thermodynamics, which is the study of energy transformations, and thermochemistry, which applies the field to chemical reactions, specifically. Thermochemistry ? 2015 Pearson Education, Inc. 2 Kinetic Energy Kinetic energy is energy an object possesses by virtue of its motion: Thermochemistry ? 2015 Pearson Education, Inc. 3 Potential Energy