Cracking Flashcards
1
Q
What is cracking?
A
Splitting up long-chain hydrocarbons
2
Q
What type of reaction is cracking?
A
Thermal decomposition
3
Q
What is thermal decomposition?
A
Breaking molecules down by heating them
4
Q
What is the first step in cracking?
A
Heat long the long-chain hydrocarbon to vaporise it
5
Q
What does vaporise mean?
A
Turn it into a gas
6
Q
What happens when the hydrocarbon has been vaporised?
A
Passed over a powdered catalyst
7
Q
What temperature is the catalyst?
A
400-700 degrees Celsius
8
Q
What type of catalyst is used?
A
Aluminium oxide
9
Q
What are the products of cracking?
A
Shorter alkane and alkene
10
Q
What are alkenes?
A
Unsaturated hydrocarbons
