Chemical reactivity teaching resources
Worksheets and lesson ideas to challenge students aged 11 to 16 to think hard about chemical reactivity and chemical change (GCSE and Key Stage 3)
I was sent this epic video showing a chemical party and just had to share it. It includes lots of nice ideas that you could modify and use in your classroom, but you will need to watch it first as it may not be appropriate for your class.
Chemical or physical change in the context of rusting
Key Stage 3 worksheet on chemical and physical change looking at rusting. Students take a nail home and have to make it rust! Students bring the nail back two weeks later and this can serve as a platform to begin thinking about chemical and physical change. (PDF)