ChemistryCode 5070
Alkenes
What this topic asks you to be able to do
- State that alkenes have a double covalent bond between carbon atoms and so count as unsaturated hydrocarbons
- Describe how alkenes and hydrogen are manufactured by cracking larger alkane molecules with a catalyst and a high temperature
- Describe why larger alkane molecules are cracked.
- Describe the test that distinguishes saturated from unsaturated hydrocarbons through how each reacts with aqueous bromine.
- State that only one product comes out of an addition reaction.
- Describe the properties of alkenes shown by their addition reactions with: (a) aqueous bromine or bromine (b) hydrogen with a nickel catalyst present (c) steam with an acid catalyst present, and for each product draw its structural or displayed formula