Practice questions
A free sample of Brainlag Learn questions. Choose a course, then filter by topic and difficulty. Each question opens in Learn, where it is marked and explained.
1415 questions
| Practice questions | Topic | Difficulty |
|---|---|---|
| Which substances are in the mixture | GCSE Chemistry: Chemical analysis | 2 marks |
| Repeat runs: anomaly, mean and Rf | GCSE Chemistry: Chemical analysis | 6 marks |
| Which sample is pure? | GCSE Chemistry: Chemical analysis | 5 marks |
| Two formulations compared | GCSE Chemistry: Chemical analysis | 6 marks |
| Why products are formulations (6 marks) | GCSE Chemistry: Chemical analysis | 6 marks |
| Define the terms of chemical analysis | GCSE Chemistry: Chemical analysis | 3 marks |
| A chromatogram: Rf values and what a mixture contains | GCSE Chemistry: Chemical analysis | 5 marks |
| Volume of a gas in a sample of air | GCSE Chemistry: The Earth's atmosphere | 2 marks |
| Percentage of a gas in a sample | GCSE Chemistry: The Earth's atmosphere | 2 marks |
| What dry air is made of | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| The order of events in the early atmosphere | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Where the gases came from and went | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Balancing an equation from the atmosphere topic | GCSE Chemistry: The Earth's atmosphere | 2 marks |
| How the atmosphere changed (6 marks) | GCSE Chemistry: The Earth's atmosphere | 6 marks |
| How the greenhouse effect works | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Spotting a greenhouse gas | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Which greenhouse gas an activity adds | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Reading a greenhouse gas graph and a percentage increase | GCSE Chemistry: The Earth's atmosphere | 3 marks |
| Percentage change from a data table | GCSE Chemistry: The Earth's atmosphere | 2 marks |
| Atmospheric pollutants and their effects | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Mass of sulfur dioxide from burning a fuel | GCSE Chemistry: The Earth's atmosphere | 3 marks |
| Pollutants from burning fuels and their effects (6 marks) | GCSE Chemistry: The Earth's atmosphere | 6 marks |
| What a carbon footprint is and how to reduce it | GCSE Chemistry: The Earth's atmosphere | 1 mark |
| Carbon footprint of a home's electricity | GCSE Chemistry: The Earth's atmosphere | 4 marks |
| Car or train: comparing journey footprints | GCSE Chemistry: The Earth's atmosphere | 4 marks |
| Carbon dioxide from burning a fuel | GCSE Chemistry: The Earth's atmosphere | 3 marks |
| Reducing a carbon footprint (6 marks) | GCSE Chemistry: The Earth's atmosphere | 6 marks |
| The gases in air, then and now | GCSE Chemistry: The Earth's atmosphere | 6 marks |
| Define the terms for the atmosphere and resources | GCSE Chemistry: The Earth's atmosphere | 3 marks |
| Carbon dioxide over two hundred years | GCSE Chemistry: The Earth's atmosphere | 8 marks |
Questions are shared by every board that teaches the topic.