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Tuesday, March 10, 2020

Separating a mixture using evaporation. 

Aim: Looking at how evaporation works.
Hypothesis: I don't know or have any predictions for this experiment.

Equipment: Copper sulphate solution, 250mL beaker, heat proof mat, evaporating basin, element.
Method: 
1: Set up element
2: Add 100mL of hot water to the beaker and place on the element.
3: Add copper sulphate to the evaporating basin until it is quarter full.
4: Carefully place the evaporating basin on top of the beaker.
5: Turn the temperature to 8.
6: Heat the solution until most of the solvent has been evaporated and crystals of solute are forming.
7: Turn off the element, careful not to touch as it will be hot for a long time.

Observations: When I first looked at the process I realised the copper sulphate had shrunk and the water beneath was boiling. The side if the beaker had condensation.
Conclusion: I didn't have a hypothesis so there is no answer to this.
Discussion: The solvent (copper sulphate) starts to evaporate because of the heat caused by the boiling solute (water) that is on the element. This is happening because of the boiling water which creates condensation.
Conclusion: This experiment was really fun because I liked watching the process happen it was interesting.

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