# Activation Energy & Energy Diagrams

> This section covers activation energy (E_a), the activated complex, and fully labelled potential energy versus course of reaction graphs for exothermic and endothermic reactions (with and without a…

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## Full notes

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## More in Energy and chemical change

- [Exothermic & Endothermic Reactions](https://www.hlayiso.com/grade-11/physical-sciences/notes/energy-and-chemical-change/exothermic-and-endothermic-reactions) — Previous section
- [All Energy and chemical change sections](https://www.hlayiso.com/grade-11/physical-sciences/notes/energy-and-chemical-change)

## Frequently asked questions

### What will I learn in "Activation Energy & Energy Diagrams"?

This section covers Activation Energy & Energy Diagrams as part of Energy and chemical change in Grade 11 Physical 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 "Activation Energy & Energy Diagrams", are written against the official CAPS curriculum and ATP for Grade 11 Physical Sciences.

### What should I study after "Activation Energy & Energy Diagrams"?

Continue with the next section in Energy and chemical change, or test your understanding with the interactive quiz linked to this section.

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