Density and changes of state

3 lessons in Particle model of matter.

27 exam questions · 65 marks

3.1 Density Density as mass per unit volume, the equation density = mass / volume, its units, and how the arrangement of particles explains the densities of solids, liquids and gases. AQA Edexcel OCR 9 questions 3.2 Required practical: density Required practical: measure the density of a regular solid, an irregular solid and a liquid using a ruler, a eureka can, a measuring cylinder and a balance. AQA Edexcel OCR 9 questions 3.3 Changes of state and internal energy Changes of state as physical changes in which mass is conserved, and internal energy as the total kinetic and potential energy of the particles in a system. AQA Edexcel OCR 9 questions