Alkenes Across 4. 5. 8. 11. 14. 16. 17. 20. 22. 23. 24. The product of the reaction between ethene and hydrogen bromide. (11) This is the acid catalyst used in the industrial manufacture of alcohol from alkenes. (10) Describes the arrangement with 2 different attachments to the same side of the double bond. (8) The first step in electrophilic addition produces one of these. (11) Describes a molecule with two different groups attached to opposite sides of the double bond. (8) Adding many alkene molecules together produces one of these. (7) The most stable type of carbocation. (8) The major product formed when propene reacts with hydrogen bromide. (13) A carbocation with a single R group attached. (7) This is used as a test for unsaturated hydrocarbons. (12) When a bromine molecule approaches a double bond it becomes ...?.... (9) Down 1. 2. 3. 4. 6. 7. 9. 10. 12. 13. 15. 18. 19. 21. Rocket Resources.co.uk Alcohol is produced from ethene at 300 degrees and 70 atmospheres. These are called the reaction ...?.. (10) A hydrocarbon containing carbon-carbon double bonds. (11) The shape of an ethene molecule. (6) A carbocation is formed when the double bond in an alkene does this. (6) The reaction of ethene with steam to produce ethanol. (9) A carbon-carbon double bond creates this type of dipole in an attacking bromine molecule. (7) An alkene with six carbon atoms. (6) A suitable poly(alkene) to manufacture plastic bowls. (10) The double bond in an alkane is an area of high electron density and so is attractive to these. (13) A good poly(alkene) to make climbing ropes from. (11) Carbon-carbon double bonds create stereoisomerism because of a lack of this.(8) When an electrophile attacks a double bond this type of product is made. (8) When making a polymer, alkenes break their double bond and become ...?... (10) The electron releasing ability of an alkyl group affects it’s .....?..... (9) Rocket Resources.co.uk