Chemistry › Section K · Solutions and colloids › Topic K.2
Electrolytes
Salt water conducts electricity and sugar water does not, because one solution contains ions and the other contains only molecules. Sorting dissolved substances by how many ions they produce explains conductivity, guides how you write equations for reactions in water, and sets up the colligative properties that come later in this section.
In this topic
- Why some solutions conduct
- Strong, weak and nonelectrolytes
- Ionic electrolytes: dissociation
- Worked example: counting ions
- Molecular electrolytes: ionisation
- Weak electrolytes
- Worked example: how weak is vinegar's acid?
- Nonelectrolytes, and water itself
- Worked example: ranking conductivity
- Common mistakes to avoid
- Key takeaways
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