Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

By the end of this section, you will be able to:Define “energy”Explain the difference between kinetic and potential energyDiscuss the concepts of free energy and activation energyDescribe endergonic and exergonic reactions

This resource includes 3 video lectures over Hess's Law, including using reactions and enthalpy of formation. A worksheet with 10 thermochemical equations for student practice with answers is included.  This resource corresponds to Chemistry Atoms First 2e sections 9.3https://openstax.org/books/chemistry-atoms-first-2e/pages/9-3-enthalpy

This module covers four areas of enthalpy:1- introduction to enthalpy and reaction-energy diagrams; define exothermic and endothermic2- Thermochemical expressions and manipulating enthalpy3- Hess's Law4- Enthalpies of formation to find enthalpy of reaction

This resource contains one video covering bond dissociation energy and examples of the calculation of reaction enthalpy. This resource corresponds to Chemistry Atoms First 2e section 9.4https://openstax.org/books/chemistry-atoms-first-2e/pages/9-4-strengths-of-ionic-and-covalent-bonds

This subject deals primarily with equilibrium properties of macroscopic systems, basic thermodynamics, chemical equilibrium of reactions in gas and solution phase, and rates of chemical reactions.