Knowledge organiser designed to be printed in A3, however smaller scales (A4) can be used. The resource is constructed to be used for class work, independent/group learning through the sign-pointed references to textbooks, revision guides and web sites. The page numbers stated in each box can be easily adjusted to other reading/research materials. The scaffolded work starts with appropriate notes on electron orbits, the electron structures for the first 20 elements in the periodic table, group/periods/proton/electron numbers, appropriate notes on the relationships of group and period numbers in relation to the atomic structure and ends with GCSE questions. Extension activities include the calculation of neutron numbers using the atomic mass and number and the consideration of RAM for chlorine. Embedded QR codes take the student to appropriate revision sites (YouTube and BBC Bitesize). Mark scheme is included for all answers.