UNIT 2 - Homologous Series

Question 1

what is the Homologous series?

Answer 1

a family of compounds with the same general formula and similar chemical properties that show a gradual change in physical properties

Question 2

what do alkanes, alkenes, and cyloalkanes, all belong to?

Answer 2

they all belong to different homologous series

Question 3

what are hydrocarbons?

Answer 3

molecules which consist of hydrogen and carbon atoms only

Question 4

what is molecular formual?

Answer 4

formula which shows the number of atoms of the different elements which are present in one molecule of a substance

Question 5

what is full structural formula?

Answer 5

a 2D drawing of a 3D molecule, it shows the atoms present and the position of the covalent bonds

Question 6

what is shortened structural formula?

Answer 6

formula which shows the position of the atoms in the molecule without showing the bonds

Question 7

what are the first 8 alkanes in order?

Answer 7

methane, ethane, propane, butane, pentane, hexane, heptane, and octane

Question 8

what are alkanes?

Answer 8

-a subset of saturated hydrocarbons,
-all end in -ane
-only contain carbon to carbon single bonds
-have the general formula Cₙ H₂ₙ + ₂
-are insoluble in water
-are commonly used as fuels