One-page reference of the most common oxidation numbers for A-level with clear layout. Lists the elements which have particularly unpredictable oxidation numbers and gives case studies of them. Also lists the most common oxidation numbers of transition metals, with half-equations for the reduction of manganate(VII) and dichromate(VI) ions. Versions in colour and in black and white for photocopying. Specification references include OCR A 2.1.5 and AQA 3.1.7.

Diagrams showing conjugate acid-base pairs with a bold, vibrant, eye-catching design that would look good for revision notes. Suitable for courses such as the Edexcel A-level chemistry specification, section 12.1, AQA, OCR and others. Covers dissociation of strong and weak acids, and a strong acid protonating a weaker acid. Versions of the resource in colour and in black and white for better photocopying are included.

Diagram of Born-Haber hydration, solution and lattice enthalpy laid out at a large size with a lot of space for notes and comments. Two versions, one for AQA which uses the term lattice dissociation enthalpy, the other for OCR and Edexcel which just call it the reverse of the lattice enthalpy. Specification targets include: AQA 3.1.8.1, OCR A 5.2.1, Edexcel 13.1 Changelog, September 2023: more detail on the calculations.