Chemistry Unit 1 0.0 / 5 ? ChemistryMaking Crude oil usefulUsing carbon fuelsMaking polymersGCSEOCR Created by: hollyjordanCreated on: 22-03-16 10:43 653214 Across 1. What is at the bottom of the fractionating coloumn (7) 4. Alkenes have a ...... covalent bonds (6) Down 2. fossil fuels are ...... resources (6) 3. ....... is used to text for an alkene (7) 5. Burning hydrocarbons puts water and ............. into the air (6, 7) 6. Crude oil is a mixture of many (12)
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