4-mark practice questions — Edexcel GCSE Chemistry (1CH0)
148 questions · chemistry · View as Markdown
How to answer
4-mark questions are the shortest levels-of-response band. Aim for four scientific ideas, each in its own short sentence.
Sample questions
- Explain why zinc is often used to protect iron structures, such as oil pipelines, from corrosion.
- Explain how carbon particulates produced from the incomplete combustion of fossil fuels can affect human health and the …
- Explain why increasing the pressure of gaseous reactants increases the rate of reaction.
- Ethanoic acid is a carboxylic acid found in vinegar. Describe what is observed when ethanoic acid is added to sodium car…
- Explain, using particle theory, why a solid substance keeps a fixed shape but a liquid takes the shape of its container.…
- Explain why hydrogen chloride (HCl) is a gas at room temperature, whereas sodium chloride (NaCl) is a solid at room temp…
- Combustion is an exothermic reaction. Explain, in terms of bond breaking and bond forming, why the temperature of the su…
- Silver nanoparticles are being incorporated into the fabric of some sports clothing to reduce bacterial growth and odour…