4(d) Alkenes

Question 1

General Formula

Answer 1

C2H2n

Question 2

Functional Group

Answer 2

C=C

Question 3

Unsaturated Hydrocarbons

Answer 3

Contain C=C bond (double covalent)

Question 4

What type of reactions do alkenes undergo?

Answer 4

Addition reactions

Question 5

Addition reactions

Answer 5

Part of the C=C bond breaks to form a C-C bond, and the remaining electrons are used to join another 2 atoms on

Question 6

Addition reaction

Answer 6

alkene + bromine -> dibromoalkane

Question 7

Characteristics of reaction mixture of addition reaction

Answer 7

Reaction mixture decolourises from orange -> colourless
Test for C=C