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6. What general formula do all alkenes have
7. What is a disadvantage of producing ethanol through fermantation
- The process needs a higher temperature to work
- The process needs more complex equipment to work
- It's not very concentrated
- It comes from a non renewable source
8. What are Alkenes
- Hydrocarbons with a single bond between the carbon atoms in their chains
- Two Alkalis bonded together.
- Hydrocarbons with a double bond between two of the carbon atoms in their chains
- Alkalis
9. Which statement is true
- The first two alkenes are ethane and propane
- The first two alkenes are ethene and propene
- All alkenes are ethene or propene
- Ethene and propene are not alkenes
10. Why does the bromine water change?
- Double bonds open up and form bonds with the bromine
- The alkenes absorb the colour
- The alkenes causes the Bromine water to evaporate away
- Existing single bonds join with the bromine