In USA in the 1970s, 200,000 tonnes of lead was added to petrol every year. Now leaded petrol for cars is banned. Discover the dangers of tetraethyl lead in petrol.
This video was produced by the award-winning online resource Twig, and is part of a set of freely available chemistry videos.
Top tips from research to improve understanding and collaboration in practicals
Use this handy technique to effectively engage disinterested learners
A research and reflect activity to get your learners thinking about the materials they consume and the impact of individual actions
Explore analytical techniques and their applications with a chromatography investigation and research activity
Describe the metallic bonding model and explain how this leads to particular properties in metals, with this scaffolded writing activity
Understand the models and diagrams used to represent ionic bonding and their limitations, with this scaffolded writing activity
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