Tunnelworks: Key Stage Five Chemistry

Tunnelworks is a series of teaching and learning resources linking mathematics and science to the Thames Tideway Tunnel project, a major new sewer that will help protect the River Thames from increasing pollution. Background to the project is given in the introductory video.

The AS Level lesson gives students practice in calculating the enthalpy change for exothermic reactions using a real-world example and sample experimental data. Students can discuss experimental technique and the real world implications of a reaction being exothermic .

The A2 Level lesson helps students explore stoichiometry and titrations using a real-world example of testing for dissolved oxygen in water using the Winkler test. Students must ‘track’ how one mole of oxygen is represented within each stage of the test’s reactions to identify how many moles of sodium thiosulphate represent one mole of oxygen, in the final titration. Students then calculate the results of titrations using a range of Winkler test kits to find out which are suitably accurate, exploring how the choice of equipment, solutions and method all combine to deliver the resolving power (precision) of a titration.

Show health and safety information

Please be aware that resources have been published on the website in the form that they were originally supplied. This means that procedures reflect general practice and standards applicable at the time resources were produced and cannot be assumed to be acceptable today. Website users are fully responsible for ensuring that any activity, including practical work, which they carry out is in accordance with current regulations related to health and safety and that an appropriate risk assessment has been carried out.


You might also like


Published by


Share this resource


This resource is part of Tunnelworks

Lists that tag this content