The blue bottle experiment  

The blue bottle experiment (demonstrated in Developing Understanding) is a familiar and striking illustration of a reversible redox reaction. In the video Beyond the 'blue bottle' Declan Fleming builds upon the original experiment but uses a different redox indicator to achieve a different colour change.

Reversible reactions

Colin Baker describes a spectacular reversible reaction between copper(II) sulfate and hydrogen chloride and ammonia. This is part of a series of teacher demonstrations designed to capture the student's imagination.

Quantum Casino

This is a comprehensive website that uses reversible reactions such as the one between calcium carbonate and calcium oxide and carbon dioxide as an introduction to entropy. The reversible decomposition of limestone has been investigated as a potential way of distributing energy.

Battery power

Rechargeable batteries rely on reactions that can be reversed. In this article the chemistry behind primary and secondary cells is explored in detail.

Building batteries that breath describes the cutting-edge work of Peter Bruce and his team in developing lithium-air batteries.