P1 4c alkanes

Question 1

what are alkanes?

Answer 1

they are a group of saturated hydrocarbons

Question 2

what is the general formula of the alkanes?

Answer 2

CnH2n+2

Question 3

what happens in a substitution reaction?

Answer 3

one atom is swapped with another atom

Question 4

when do alkanes undergo substitution reaction?

Answer 4

they undergo a substitution reaction with halogens in the presence of ultraviolet radiation

Question 5

what is an example of a substitution reaction?

Answer 5

when methane reacts with bromine in a substitution reaction

- a bromine molecule will replace a hydrogen molecule and it will make bromomethane and hydrogen bromide as the products

Question 6

what family do the products belong to?

Answer 6

halogenalkanes or haloalkanes

Question 7

what are halogenalkanes used for?

Answer 7

solvents, refrigerants, propellants and pharmaceuticals

Question 8

what are alkenes used for?

Answer 8

to make polymers, thats why cracking is important as well