MAGIC TRICK

food coloring........
see how organic chemistry is applicable ,,,,,,,between soap and food coloring,,
soap is organic compound  

watch this ....

SIMPLIFIED ORGANIC COMPOUND

PHYSICAL PROPERTIES

Alkanes

• Simplest organic molecules with only C and H atoms.
• Contain only C-C and C-H σ bonds
• Commercially important as fuels and oils.

Nomenclature:
Summary: 

Functional group suffix = -ane Functional group prefix = alkyl-

e.g. CH3CH3 = ethane e.g. CH3CH2-  = ethyl

Physical Properties:
The low polarity of all the bonds in alkanes means that the only intermolecular forces between molecules of alkanes are the very weak induced dipole - induced dipole forces.  These forces are easily overcome.  As a result, in comparison with other functional groups, alkanes tend to have low melting and boiling points and very low solubility in polar solvents such as water (remember "oil and water don't mix" and the adage "like dissolves like").

HYDROCARBON

Hydrocarbons are compounds that only contain H and C atoms, but they can be subdivided according to the following tree diagram depending on the CC bond types that are present.