combustion/substitution/cracking

Question 1

complete combustion

Answer 1

alkane burn in excess oxygen to give CO2 and H2O only.

Question 2

incomplete combustion

Answer 2

alkane burn in limited oxygen to form CO and H2O.

Question 3

substitution

Answer 3

reaction of saturated compounds have to be catalysed by UV light.

Question 4

cracking

Answer 4

larger hydrocarbons molecules are are broken down into smaller hydrocarbons molecules

Question 5

cracking process

Answer 5

using high temperature and a solid catalyst