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==Key Stage 4==
===Meaning===
[[Diesel]] is a fraction of [[Crude Oil]] which has a [[Carbon]] chain length of around 14-20 [[Carbon]] [[atom]]s.
===About Diesel===
: [[Diesel]] is a [[hydrocarbon]] because it is a [[molecule]] made of only [[Hydrogen]] and [[Carbon]] [[atom]]s.
: [[Diesel]] is used as [[fuel]] for cars, trucks and trains.