cracking Flashcards
1
Q
what are the two types of cracking
A
catalytic and steam
2
Q
summaries catalytic cracking
A
a hydrocarbon is passed over a catalyst (aluminium oxide) and cracks by therman decomposition
3
Q
summarise steam cracking
A
hydrocarbon mixed with steam and the heat makes it crack.
4
Q
products of cracking
A
an alkane and an alkene
5
Q
test to identify alkenes
A
bromine water test
6
Q
colour of bromine if alkene present
A
colourless
7
Q
colour of water if alkene not present
A
orange
8
Q
why is cracking needed?
A
smaller chain hydrocarbons are in demand
