I am a TES recommended author and a UK Science teacher with a Chemistry specialism.
You'll find various KS3 and KS4 Science resources here (Biology, Physics and Chemistry) as well as some A level Chemistry stuff. I try to make my lessons visually appealing, with clear diagrams and text and a variety of different tasks.
If you have any suggestions of resources you'd like to see uploaded, I'd be happy to hear from you.
A year 12 (AS level) guide to solving Hess cycle questions on enthalpy change of reaction, using either enthalpy change of combustion or enthalpy change of formation values. Includes detailed instructions and one worked problem. Could also be used for year 13 (A level).