GCSE Chemistry C7 0.0 / 5 ? ChemistryCrude oil, cracking and hydrocarbonsGCSEAQA Created by: ReggifaceCreated on: 12-01-20 09:49 10893261457 Across 1. Addition of Hydrogen (13) 4. They have a C=C double bond (7) 5. Residue at the bottom of the fractionating column (7) 7. A fossil fuel (5, 3) 10. The gas needed for complete combustion of alkanes (6) Down 2. Type of hydrocarbons in high demand (5, 7) 3. -------- can react with Alkenes (8) 6. They have the general formula of CnH2+2 (7) 8. An example of a naturally occurring polymer (10) 9. Have the '-OH' functional group (8)
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