Hydrocarbons

Question 1

ALKANES

Answer 1

• CnH2n+2
• Single Bond
• Saturated

Question 2

ALKENES

Answer 2

• CnHn
• Double Bond
• Unsaturated

Question 3

AKYNES

Answer 3

• CnH2n-2

Question 4

CYCLOALKENES

Answer 4

• CnH2n
• Consist of 3 or MORE carbon atoms arranged into a RING
• Every carbon is bonded to 2 hydrocarbons and two carbon atoms

Question 5

BENZENE

Answer 5

• C6H6
• Stable, flat hexagonal ring structure
• All carbon to carbons are IDENTICAL in nature and INTERMEDIATE in length between a single and double bond

Question 6

ADDITION REACTIONS OF HYDROCARBONS

Answer 6

• ALKENES
• Unsaturated = bonding capacity isnt fully utilised ie. their molecules are able to bond to more atoms
• READILY undergo ADDITION reactions
• Where the double bond is replaced by bonds to other atoms like H, F, Cl, Br, I
• Quick colour change

Question 7

SUBSTITUTION REACTIONS OF HYDROCARBONS

Answer 7

• ALKANE OR BENZENE
• When ALKANE OR BENZENE is combined with Cl2 or Br2
• Results in replacement of one or more H atoms with Cl or Br atoms
• The number of replaced H atoms depends upon the reaction condition
• HAPPEN SLOWLY

Question 8

COMBUSTION REACTIONS OF HYDROCARBONS

Answer 8

• When ignited in excess air, they produce carbon dioxide, water vapour and release