Lesson 1: The Nature And Structure Of Organic Molecules Flashcards
Two most important persons to recognize that carbon (C) is tetravalent.
German chemist Kekule and Scottish chemist Couper
This means that carbon can formm four covalent bonds with other atoms such as hydrogen (H), oxygen (O) and nitrogen (N).
Tetravalent
________ having four valence electrons cannot bond easily with other atoms like that of carbon.
Silicon
In the nature of carbon, it can form a ______, _______ and _________ with a wide array of organic substances.
Linear, branched and cyclic bonds
Carbon can form a more _______________ if the carbon atom will have single, double and triple bonds.
Diverse molecular structure
Who notion about the chemical inertness of the noble gases indicated a high degree of stability of the electron configuration of these elements.
Gilbert N. Lewis
It is a very simplified representation of the valence shell electrons in a molecule.
Lewis structure
_____________ of a molecule happens when it acquire the complete (octet) eight electrons in the outer most shell of an atom.
Chemical bonding
An atom becomes _____________ when it loses an electron.
Negatively charged (–)
An atom becomes ______________ when it gains an electron.
Positively charged (+)
Bond formed between atoms
Ionic bond
When the two atoms shared their electrons it forms ___________.
Covalent bond
The covalent bond can be polar if the electrons shared are ___________.
Not equal
The covalent bond can be non polar if the electrons shared are __________.
Equal
Classification of organic compounds
Hydrocarbons
Heterocatoms
Organic compounds containing hydrogen and carbon.
Hydrocarbons
Hydrocarbons are also classified into two, these are___________ and _________ composed of double or triple bonds.
Saturated and unsaturated
Elements aside from carbon and hydrogen which is incorporated in organic compounds are called…..
Heteroatoms
Most common heteroatoms
Oxygen, nitrogen and the halogens.
Hydrocarbons, which contain only carbon and hydrogen are two types-the _______ and the _________.
Aliphatics and aromatics
Belongs to the aliphatics are
Alkanes
Alkenes
Alkynes; and
Their cyclic analogs
Heteroatoms with halogens are
Organic halides
Alkyl and aryl halides