Six-mark questions
Six-mark questions are extended open response questions. These require longer answers than the structured questions with fewer marks. It is wise to plan your answer rather than rushing straight into it, otherwise you may stray away from the key points.
Six-mark questions are marked using a levels-based mark scheme because they are open ended. To gain full marks, you need to:
- support explanations using scientific knowledge and understanding
- use appropriate scientific words and terms
- write clearly and link ideas in a logical way
- maintain a sustained line of reasoning, rather than getting lost or bogged down
You are likely to see command words such as:
- describe - you need to give an account but no reason
- explain - you must give reasons or explanations
- devise - you must plan or invent a procedure using your scientific knowledge and understanding
- evaluate - you must review information, including identifying strengths and weaknesses, and make a supported conclusion
Six-mark questions may be synoptic questions. This means they bring together ideas from two or more topics. For example, a question about fertilisers could include ideas about covalent substances, acids and alkalis, chemical calculations, and effects on the environment.
Remember that the topics covered in the first paper are assumed knowledge for the second paper, so questions in the second paper may need knowledge and understanding of those topics too.
The answers shown here give marking points as bullet points. You do not usually need to include all of them to gain six marks, but you do need to write in full sentences, linking them logically and clearly.
Writing six-mark answers with Dr Alex Lathbridge
Listen to the full series on ±«Óătv Sounds.
Sample question 1 - Foundation
Question
Ammonium sulfate is a salt used as a fertiliser. It can be prepared in the laboratory and in fertiliser factories.
Compare these two ways to prepare ammonium sulfate. [6 marks]
This question has been written by a Bitesize consultant as a suggestion to the type of question that may appear in an exam paper.
The following are vaild points that could be included in your answer. It is important that you do not bullet point your answer but write your sentences in full.
Similarities:
- both use ammonia/ammonia solution
- both use sulfuric acid
- both produce ammonium sulfate
Differences (one mark for each difference; must be a comparison)
Feature | Laboratory preparation | Factory preparation |
Scale | Small | Large |
Number of stages | Small number | Several/more |
Starting materials | Ammonia solution and sulfuric acid | Raw materials for making ammonia solution and sulfuric acid / named raw material, eg air, water, natural gas, sulfur |
Type of process | Batch | Continuous |
Feature | Scale |
---|---|
Laboratory preparation | Small |
Factory preparation | Large |
Feature | Number of stages |
---|---|
Laboratory preparation | Small number |
Factory preparation | Several/more |
Feature | Starting materials |
---|---|
Laboratory preparation | Ammonia solution and sulfuric acid |
Factory preparation | Raw materials for making ammonia solution and sulfuric acid / named raw material, eg air, water, natural gas, sulfur |
Feature | Type of process |
---|---|
Laboratory preparation | Batch |
Factory preparation | Continuous |
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