Pupil sheet · Crystallisation
Crystallisation — return questions
Name ______________________ Date ____________
Use one to two weeks after the lessons. Keep the notes and the lesson closed.
1. explain
Keep the lesson closed. Define saturated, state its temperature condition, and distinguish it from concentrated.
2. explain
Without the lesson, explain the two changes that turn prepared solution into crystals surrounded by remaining liquid.
Partial evaporation
Cooling
3. state
From memory, explain why filtering the original clear solution would be too early. Describe collection and drying after crystals form.