There are 6 Chemistry units in the Combined Sciences GCSE. Choose a unit from the menu to revise, try some past paper questions or download some resources to complete offline.

The Chemistry topics will be tested in the Biology exam as well as in the Unified paper.

Image from Taavi Adamberg via Wikimedia Commons CC-BY-SA-3.0

Click here to download the Chemistry specification and here for a copy of the data sheet.

OCR Combined Science   C1 Menu