Alkenes and polymerisation

Question 1

Why are alkenes unsaturated

Answer 1

they contain at least one carbon carbon double bond

Question 2

Structure of alkenes + monomers

Question 3

Addition of hydrogen with alkenes

Answer 3

hydrogenation, ethene + hydrogen = ethane

Question 4

Addition of steam with alkenes

Answer 4

hydration, ethene + water = ethonol

Question 5

Addition of halides with alkenes

Answer 5

halogenation, ethene + chlorine = dichloroethane

Question 6

How are polymers formed

Answer 6

small unsaturated molecules (monomers) are joined together to form longer molecules

Question 7

Condensation polymerisation definition

Answer 7

2 different monomers which have reactive ends, they produce a polymer and a smaller molecule (usually water)

Question 8

Describe the process of additional polymerisation using ethene

Answer 8

small monomer units called ethene C2H4, C=C double bond is reactive, C=C bond breaks under pressure because of a catalyst, same monomers join together to form a repeating chain of monomers, a polymer is formed called polyethene, process is called
additional polymerisation as the same monomers join (added) together to make a polymer

Question 9

Look at stru