Brainlag PlusHow the real OCR Gateway GCSE Chemistry A (J248) and Combined Science A (J250) chemistry papers are set out, how these mocks work, and how to use your results.
The real papers
Gateway Chemistry A (J248): two papers per tier, each 1 hour 45 minutes and 90 marks.
Combined Science A (J250): two chemistry papers per tier among six, each 1 hour 10 minutes and 60 marks. The first paper covers particles, elements, compounds and mixtures and chemical reactions; the second covers predicting reactions, controlling reactions and global challenges.
The rest of this lesson and its 3 practice questions are in Plus.
Screen 1 of 2, free to read.
- 3 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards