Evaporation and Crystallization
Learning Objective
I can explain how to obtain pure crystals from a solution using evaporation and crystallization techniques, and relate it to separating mixtures like magnesium chloride from calcium sulfate.
Lesson Flow
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GCSE Chemistry - Filtration, Evaporation & Crystallisation
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Practice
6 questions • Short answer
Exit Ticket
“You have a solution of potassium nitrate (KNO₃) in water. Describe the steps you would take to obtain pure crystals of potassium nitrate from this solution using crystallization. A company is trying to obtain pure copper(II) sulfate (CuSO₄) crystals from a solution. They are concerned that heating the copper(II) sulfate too much might cause it to decompose. Which separation technique, evaporation or crystallization, would be more suitable in this situation, and why?”
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