Thermal physics is traditionally thought of as heat. In this course, we approach it as energy and entropy. Through a look at the kinetic theory of gases, diffusion, gas laws, engines, free energy and osmosis, we will take you through important ideas in this field. You will understand how it is possible to use a statistical look in thinking about systems with many particles which includes most of what we encounter in the everyday world. You will explore how experiments quantify heat and temperature, and learn the basic quantities and techniques used in the study of such systems. Laboratory work will teach the equalisation of temperature and concentration of simple chemical reactions, and you will learn to apply concepts and models in a range of contexts.