Full lesson with lesson plan worksheets and practical.The focus on the physics side of energy from burning food. This can easily be changed for biology.
full lesson on latent heat and internal energy. Lesson requires students to measure the temperature of icy water while heating it. This can be done as a demo.
full lesson on alpha and beta decay and simple exam questions to help understanding. Gamma also briefly mentioned. The lesson is also printed on a work booklet if needed to help students
A lesson on how to balance word and symbol equations could be used for KS3 or GCSE. I uses chemical reactions between acids and metals to help guide students on how to name salts.