Hydrocarbons

Question 1

What is a hydrocarbon

Answer 1

A compound containing only carbon and hydrogen

Question 2

What is a homologous series

Answer 2

A family of compounds with similar chemical properties and same general formula

Question 3

What are isomers

Answer 3

Compounds with the same molecular formula but different structures

Question 4

What is a saturated hydrocarbon

Answer 4

Contains only single bonds (C–C).

Question 5

What is an unsaturated hydrocarbon

Answer 5

Contains at least one double bond (C=C).

Question 6

How do you test for unsaturation

Answer 6

Add bromine water → turns from orange to colourless

Question 7

General formula of alkanes

Answer 7

CₙH₂ₙ₊₂

Question 8

General formula of alkenes

Answer 8

CₙH₂ₙ

Question 9

Why are alkenes more reactive

Answer 9

They have a C=C double bond which is easy to break.

Question 10

What is a functional group

Answer 10

Group of atoms responsible for a compound’s reactions

Question 11

What takes priority in numbering

Answer 11

Double bonds over branches

Question 12

How are branches shown in shortened structural formula

Answer 12

Using brackets.