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==Key Stage 4==
===Meaning===
[[Bitumen]] is a fraction of [[Crude Oil]] which has a [[Carbon]] chain length of around 70+ [[Carbon]] [[atom]]s.
===About Bitumen===
: [[Bitumen]] is a [[hydrocarbon]] because it is a [[molecule]] made of only [[Hydrogen]] and [[Carbon]] [[atom]]s.
: [[Bitumen]] is used as tar for roads.