Extended open response questions require longer answers than structured questions that have fewer marks. Open response questions are usually worth six marks, but some are worth fewer marks.
It is wise to plan your answer first by making some notes. This will help you to include all the key points.
To gain full marks, you need to:
Open response questions often use these command words:
Open response questions may be synoptic questions, which 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.
The answers shown here give marking points as bullet points. You do not usually need to include all of them to gain full marks, but you do need to write in sentences, linking them logically and clearly.
Diffusion is an important process in animals and plants.
The movement of many substances into and out of cells occurs by diffusion.
Describe why diffusion is important to animals and plants. [6 marks]
In your answer you should refer to:
Importance of diffusion
Examples of processes and substances
A student investigated the specific heat capacity of metals.
Describe an experiment the student could do to measure the specific heat capacity of a metal. [6 marks]