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 |
|---|---|---|
| Mass lost when a gas escapes | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Mass gained when a metal reacts with oxygen | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Total Mr on each side of an equation | GCSE Chemistry: Quantitative chemistry and the mole | 4 marks |
| Percentage by mass of an element | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Percentage of water in a hydrate | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Mass of an element in a mass of compound | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Concentration in g/dm³ | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Mass of solute from a concentration in g/dm³ | GCSE Chemistry: Quantitative chemistry and the mole | 2 marks |
| Volume of solution from a mass and a concentration | GCSE Chemistry: Quantitative chemistry and the mole | 3 marks |
| Reactivity order from experiment data | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Reactivity order from displacement results | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Will one metal displace another | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Products of a metal displacement | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Metals with water and with acid | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Oxidised or reduced (oxygen) | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| How a metal is extracted | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Balancing an extraction equation | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 2 marks |
| Mass of metal in an oxide | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 3 marks |
| Oxidised or reduced (electrons) | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 2 marks |
| Ionic equation for a displacement | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Spotting the spectator ion | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 1 mark |
| Metal and acid: products and the gas test | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 2 marks |
| Balancing a metal and acid equation | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 2 marks |
| Reactivity from temperature rises | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 4 marks |
| Will it displace? Predict and explain | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 3 marks |
| Explaining how a metal is extracted | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 4 marks |
| Ionic equation for a displacement | GCSE Chemistry: Chemical changes: reactivity, acids and electrolysis | 5 marks |
| Exothermic or endothermic from temperatures | GCSE Chemistry: Energy changes | 2 marks |
| Everyday exothermic and endothermic reactions | GCSE Chemistry: Energy changes | 1 mark |
| Where the energy goes | GCSE Chemistry: Energy changes | 1 mark |
Questions are shared by every board that teaches the topic.