"Describe and explain" questions — Cambridge International IGCSE Chemistry (0620)
28 questions · chemistry · View as Markdown
How to answer
"describe and explain" questions from Cambridge International IGCSE Chemistry (0620). Read the rubric carefully — the marking points cluster into scientific ideas rather than free-form prose.
Sample questions
- Describe how galvanising protects iron from rusting, and explain why this protection continues even if the zinc coating …
- Describe the structure and bonding in diamond, and explain why diamond does not conduct electricity.
- Ethanoic acid is a carboxylic acid found in vinegar. Describe the reaction of ethanoic acid with sodium carbonate soluti…
- Describe what an alloy is and explain why alloys are generally harder than pure metals.
- Chlorine water is added to a solution of potassium bromide and then to a separate solution of potassium iodide. Describe…
- Methane is the simplest alkane. Describe what happens when methane reacts with chlorine in the presence of ultraviolet l…
- Describe how the reactivity and melting point of the Group I metals change as you go down the group from lithium to caes…
- A student reacts calcium oxide with dilute hydrochloric acid and separately reacts calcium oxide with water. Describe wh…