(organisation code is EX2SL, your login name & password are your DOB and initials in the format DDMMYYXX - email me if you need clarification and want to use this)
Source: www.samlearning.com
A video describing the key issues surrounding the burning of hydrocarbon fuels. This is for AQA GCSE Core Science and C1.
Source: www.my-gcsescience.com