"Explain" questions — Edexcel GCSE Chemistry (1CH0)
108 questions · chemistry · View as Markdown
How to answer
WHAT + WHY. Every point paired with a because. Structure: X happens because Y. This causes Z because … Assessment Objective: AO2. Every "explain" answer on this spec is marked against exactly this pattern.
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.
- 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…
- Explain why potassium iodide conducts electricity when dissolved in water but does not conduct electricity when it is a …