cracking

Question 1

in cracking, what happens?

Answer 1

long chain hydrocarbons are broken down into smaller chain hydrocarbons

Question 2

what happens in catalytic cracking?

Answer 2

hydrocarbon is mixed with high temperature and catalyst

Question 3

what happens in stream cracking?

Answer 3

mix hydrocarbon with steam and heat them to high temperature

Question 4

as well as alkanes, what does cracking also produce?

Answer 4

cracking also produces alkenes

Question 5

what type of bond do 2 carbon atoms have in every alkene?

Answer 5

double covalent bond between the 2 carbon atoms

Question 6

alkenes are used to make chemicals called _____?

Answer 6

alkenes are used to make chemicals called polymers

Question 7

alkenes are used as a starting _______ for other useful chemicals?

Answer 7

alkenes are used as a starting material for other useful chemicals

Question 8

what is more reactive, alkenes or alkanes?

Answer 8

alkenes

Question 9

when orange bromine water is added to an alkane, what happens?

Answer 9

stays orange

Question 10

when orange bromine water is added to an alkene, what happens?

Answer 10

turns colourless