Characteristics of organic molecules

organic molecules characteristics :

1) Based on carbon .

carbon atoms gives the ability to do long chains , branches and rings .

2) form from few elements.

99.4 % carbon , hydrogen , nitrogen , and oxygen , 0.2% phosphorous, 0.2% calcium , and 0.2% all other elements

3) modular structures form from simple buildings blocks .

long and complicated molecules can be put together in twocontrasting ways.

the first : by build each one from scratch , so that no piece of one molecules be art of another , the second : to build a succession simpler , widely available parts , so that each large molecule differs from another only in the arrangement of those parts.

4) chemical function is determined by their geometric shape.