Chemistry › Section K · Solutions and colloids › Topic K.1
The dissolution process
Sugar vanishes into tea, oxygen dissolves into a lake, and a cold pack chills a sprained ankle, all because of what happens when particles of one substance spread out among another. Understanding that process explains why some things dissolve, why others do not, and why dissolving can make a solution hotter or colder.
In this topic
- Solutions are everywhere
- Two things that favour dissolving
- A three-step model
- How water dissolves an ionic solid
- Worked example: salt's tiny heat of solution
- Hot and cold dissolving
- Worked example: an instant cold pack
- Like dissolves like
- Worked example: predicting what dissolves
- How fast versus how much
- Common mistakes to avoid
- Key takeaways
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