The basic concepts 2.1 Work, heat, and energy 2.2 The first law 1). The internal energy 2). The conservation of energy 3). The formal statement of the First Law 版权所有:华东理工大学物理化学教研室版权所有：华东理工大学物理化学教研室 9 The basic concepts 2.1 Work, heat, and energy 2.2 The First Law 1). The internal energy 2). The conservation of energy 3). The formal statement of the First Law