"Describe and explain" questions — Edexcel GCSE Chemistry (1CH0)
12 questions · chemistry · View as Markdown
How to answer
"describe and explain" questions from Edexcel GCSE Chemistry (1CH0). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.
Sample questions
- Ethanoic acid is a carboxylic acid found in vinegar. Describe what is observed when ethanoic acid is added to sodium car…
- Alkenes are produced during the cracking of crude oil fractions. Describe the differences between alkanes and alkenes, a…
- The Haber process is a reversible reaction used to produce ammonia. The reaction can reach dynamic equilibrium. Describe…
- Zinc can be extracted from zinc oxide by reduction with carbon. Describe what happens during this process and explain wh…
- Poly(ethene) is made from ethene by a process called addition polymerisation. Describe what happens to ethene molecules …
- Aqueous copper chloride solution is electrolysed using inert electrodes. Describe and explain what is produced at each e…
- A student tests two solutions, both with a pH of 3, using universal indicator. One solution contains hydrochloric acid a…
- Describe what is meant by a reversible reaction and explain how a reversible reaction carried out in a closed system eve…