What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.2.3.1.1Experiments to demonstrate the• Describe experiments to demonstrate the properties of good thermal conductors and bad thermal conductors (thermal insulators)Syllabus objective2.3.1.2Thermal conduction in all solids in• Describe thermal conduction in all solids in terms of atomic or molecular lattice vibrations and also in terms of the movement of free (delocalised) electrons in metallic conductorsSyllabus objective2.3.1.3Describe, in terms of particles, why• Describe, in terms of particles, why thermal conduction is bad in gases and most liquidsSyllabus objective2.3.1.4There are many solids that conduct• Know: there are many solids that conduct thermal energy better than thermal insulators but do so less well than good thermal conductorsSyllabus objective