DF6 + DF7

Question 1

Alkenes

Answer 1

unsaturated hydrocarbons, general formula CnH2n

Question 2

Alkenes; boiling points

Answer 2

increase as the number of carbon atoms increase

Question 3

Sigma-bond

Answer 3

a single bond

Question 4

Pi-bond

Answer 4

present in a double bond, consists of two areas of negative charge, one above and one below the line of atoms

Question 5

Reaction mechanisms

Answer 5

showing the movement, bond polarity and charges in a reaction

Question 6

Carbocation

Answer 6

an ion with a positively charged carbon atom, they react very quickly with anything that has electrons to share

Question 7

Electrophile

Answer 7

positive ions/particles with a partial positive charge on one atom that are attracted to the negatively charged region in double bonds and react by accepting a pair of electrons from the double bond

Question 8

Addition reaction

Answer 8

where 2+ molecules react to form a single large molecule

Question 9

polymer

Answer 9

long chain molecule made up of small repeating units called monomers

Question 10

A-A polymer

Answer 10

when all the monomers used in the polymerisation reaction are the same

Question 11

A-B polymer

Answer 11

when two different monomers are used in the polymerisation reaction, monomers will alternate

Question 12

copolymerisation

Answer 12

where more than one typ of monomer is used in addition polymerisation, and both monomers are incorporated into the final polymer (copolymer)