Bitesize has changed! We're updating subjects as fast as we can. Visit our new site to find Bitesize guides and clips - and tell us what you think!

Did you know?

We also have Bitesize study guides covering many subjects at National 4 and National 5 on our Knowledge & Learning BETA website.

Home > Chemistry > Revision videos > Endothermic and exothermic reactions


Endothermic and exothermic reactions

Endothermic and exothermic reactions

This video shows a demonstration of two types of chemical reaction: "exothermic" (giving out heat energy) and "endothermic" (taking in heat energy).

In order to see this content you need to have both Javascript enabled and Flash installed.


Key learning points:

  • An endothermic reaction takes in energy so it gets colder.
  • An exothermic reaction gives out heat energy so it gets hotter.


A screenshot periodic table

Class Clips

Video clip about the structure of the periodic table

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.