Question 105
How can we get back the salt?
Most of the salt we put on our food comes from sea water. Sea water is a solution. How can we get salt from sea water? Use your knowledge of evaporation to plan how to get solid salt from a salt solution.
- Think about these questions:
- What materials and equipment will you need?
- Which type of scientific enquiry will you use?
- What will you do?
- Where should you set up the investigation?
- How long must you leave it to get any results?
- Carry out the investigation. Make a labelled drawing to show what you used and what you did.
- Make a labelled drawing to show the results of your investigation.
Most of the salt we put on our food comes from sea water. Sea water is a solution. How can we get salt from sea water? Use your knowledge of evaporation to plan how to get solid salt from a salt solution.
- Think about these questions:
- What materials and equipment will you need?
- Which type of scientific enquiry will you use?
- What will you do?
- Where should you set up the investigation?
- How long must you leave it to get any results?
- Carry out the investigation. Make a labelled drawing to show what you used and what you did.
- Make a labelled drawing to show the results of your investigation.
