大象传媒

Structured questions and short answer questions

Structured questions with one to four marks usually start with command words. If a question starts with the command word 'state', 'give', 'name' or 'write down', it needs a short answer only. This type of question can often be answered with one word or phrase.

It is important to state, give, name or write down the number of things that the question asks for. If you write down fewer, you cannot get all the marks. If you write down more, and one is wrong, you might lose a mark.

Some questions start with the command words 'describe', 'explain' or 'compare'. These are often worth two or more marks:

  • Describe means you should recall facts, events or processes accurately. You might need to give an account of what something looked like, or what happened.
  • Explain means you need to make something clear, or state the reasons for something happening. The points in the answer must be linked together. The answer must not be a list of reasons. All the points must be relevant to the question.
  • Compare means you need to describe similarities and differences between things. If you are asked to compare X and Y, write down something about X and something about Y and give a comparison. Do not just write about X only or Y only.

More complex structured questions will be worth three or four marks. They include questions with complex descriptions and explanations and questions in which you need to compare things.

Some of the answers are shown here as bullet points. This is to show clearly how a mark can be obtained. However, do not use bullet points in your answers - the points must be linked together logically.

This page contains AQA material which is reproduced by permission of AQA.

Learn about command words with Dr Alex Lathbridge

Understanding the different command words in your science GCSE exams.

Sample question 1 - Foundation

Question

Lithium, sodium and potassium are all in group 1 of the modern periodic table.

Explain why. [2 marks]

Sample question 2 - Foundation

The table shows information about some elements.

ElementMelting point in 掳CBoiling point in 掳C
Fluorine-202-188
Chlorine-101-35
Bromine-759
Iodine114184
Astatine
ElementFluorine
Melting point in 掳C-202
Boiling point in 掳C-188
ElementChlorine
Melting point in 掳C-101
Boiling point in 掳C-35
ElementBromine
Melting point in 掳C-7
Boiling point in 掳C59
ElementIodine
Melting point in 掳C114
Boiling point in 掳C184
ElementAstatine
Melting point in 掳C
Boiling point in 掳C

Question

a) Describe the trend in melting point from fluorine to astatine. [1 mark]

b) Estimate the boiling point of astatine. [1 mark]

Use the table to help you.

c) Room temperature is 20掳C.

Which element in the table is liquid at room temperature? [1 mark]

Sample question 3 - Higher

Question

The elements in Group 1 of the periodic table are called the alkali metals.

a) Why are they called the alkali metals? [2 marks]

b) Explain the increase in reactivity of elements further down the group. [4 marks]

Sample question 4 - Higher

Question

Explain the arrangement of the first 20 elements in today's periodic table.

You should answer in terms of atomic structure. [2 marks]