4A.3 Functional groups and Homologous series

Question 1

what is a functional group

Answer 1

it is an atom or a group of atoms in a molecule that is responsible for its chemical reactions

Question 2

what is a Homologous series

Answer 2

it is a family of compounds that have the same functional group, which differs in the formula by CH2 from the next member

Question 3

what is a general formula

Answer 3

it is a formula that represents every compound in a homologous series

Question 4

what is the general formula for alkanes

Answer 4

C(n)H(2n+2)

Question 5

what is the general formula for alkenes

Answer 5

C(n)H(2n)

Question 6

what is the general formula for halogenoalkane

Answer 6

C(n)H(2n+1)X

Question 7

alcohol

Answer 7

C(n)H(2n+2)OH

Question 8

when we burn alkanes completely in the air what is always produced

Answer 8

carbon dioxide, and water (this proves the idea of the homologous series)

Question 9

as the alcohol goes down the homologous series what happens to its boiling point

Answer 9

its following boiling points would increase (this proves the idea of the homologous series)