Chapter Objectives
Chapter 6 - Thermochemistry: Energy Flow
Sections 6.1-6.2
6.1 - Forms of Energy and Their Interconversion
Concepts
- Be able to describe and distinguish between a system and its surroundings.
- Be able to describe how energy is transferred to or from a system as heat and/or work
- Assigned problems: 6.1, 6.3, 6.5
- Be able to describe the relationship between internal energy, work and heat.
- Assigned problems: 6.2, 6.4
- Be able to explain the concept of energy conservation.
- Assigned problems: 6.7, 6.28
- Be able to describe the characteristics of a state function and explain why, for a fixed initial and final state, ΔE is a constant, while q and w can vary.
Skills
- Be able to describe energy transformations and to convert between different units of energy.
- Sample problem 6.1
- Assigned problems: 6.10, 6.12, 6.14
6.2 - Enthalpy: Heats of Reaction and Chemical Change
Concepts
- Be able to describe the meaning of enthalpy, H; the relationship between ΔH and ΔE;
and the distinction between exothermic and endothermic.
- Assigned problems: 6.17, 6.18, 6.19
Skills
- Be able to draw the enthalpy diagrams for a chemical or physical change.
- Sample problem 6.2
- Assigned problems 6.22, 6.24
