CRACKING Flashcards
1
Q
what are the 2 key features of alkanes
A
have the general formula CnH2n+2
only have single covalent bonds between carbon atoms
2
Q
what process converts long-chain hydrocarbons into short-chain hydrocarbons
A
cracking
3
Q
what are the 2 ways to carry out cracking
A
catalytic cracking
( high temperature and a catalyst)
steam cracking
(high temperature and steam)
4
Q
what makes alkenes different to alkanes
A
they have a carbon carbon double bond
5
Q
why are alkenes useful
A
- alkenes can be used to make polymers
- alkenes are also used as the starting material for other useful chemicals
6
Q
what reagent do you use to test for alkenes and what is a positive result
A
test for alkenes using bromine water which is orange and shake if an alkene is present it will turn colourless
