Larger than A1 in size - The Atomic Structure Wall Chart is ideal for your chemistry lessons. Suitable from GCSE to A-Level, it is colourful, concise and outlines the key concepts of this topic. Purchase it for your classroom from only £5
The atomic theory of matter tells us that a gas is made up of tiny particles called atoms (or molecules, which are combinations of atoms), which are constantly in motion, smashing into each other and the walls of whatever container they might be in. Here is a highly visual model of this idea.