This task is about carrying out a practical task to find out which of two liquids are solvents for any three given solids.
How to do this task:
- Plan and carry out a "fair test" to find out which liquid is the best solvent. (A solvent is able to dissolve another substance, usually a solid).
- Complete the results table and write a conclusion.
- Liquids to use: water and cooking oil.
- Solids to use: salt, sugar, and cocoa.
- You might like to think about:
What does "best" mean?
What are you going to measure?
What will you need to keep the same?
Will it be a "fair test"?
| a) |
Describe how you are going to carry out your fair test. _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ |
|||||||||||||||
|
b) |
Write your results in the table below. |
|||||||||||||||
|
||||||||||||||||
| c) |
What was your conclusion? _______________________________________________________________________ _______________________________________________________________________ |
|||||||||||||||