# Oxidation numbers

> Oxidation numbers (also called oxidation states) are a bookkeeping system used to track how electrons are distributed in chemical compounds and reactions. They help us identify which atoms are…

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## More in Oxidation and reduction

- [Oxidation, reduction and redox agents](https://www.hlayiso.com/grade-11/technical-sciences/notes/oxidation-and-reduction/oxidation-reduction-and-redox-agents) — Previous section
- [Electrolysis](https://www.hlayiso.com/grade-11/technical-sciences/notes/oxidation-and-reduction/electrolysis) — Next section
- [All Oxidation and reduction sections](https://www.hlayiso.com/grade-11/technical-sciences/notes/oxidation-and-reduction)

## Frequently asked questions

### What will I learn in "Oxidation numbers"?

This section covers Oxidation numbers as part of Oxidation and reduction in Grade 11 Technical Sciences. You'll find clear explanations, worked examples, and key definitions aligned to the CAPS curriculum.

### Is this section aligned with the CAPS curriculum?

Yes. All notes on Hlayiso, including "Oxidation numbers", are written against the official CAPS curriculum and ATP for Grade 11 Technical Sciences.

### What should I study after "Oxidation numbers"?

Continue with the next section in Oxidation and reduction, or test your understanding with the interactive quiz linked to this section.

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