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Chemical Bonding and CFCs. There are three main types of chemical bonds.
- Essay length: 1263 words
- Submitted: 30/03/2012
-
Marked by teacher:
Brady Smith
Teacher essay summary
This is a good summary of the types of bonding exhibited by molecules, with a fairly thorough talk about CFC's at the end. It is detailed and contains advanced descriptions of AS level work. This piece lacks diagrams, which would have made understanding some of the topics covered much easier
This piece of work is 3 stars out of 5.
Marked by teacher Brady Smith 23/05/2112
The first 200 words of this essay...
Introduction:
Chemical bonds are formed as a result of rearrangement of electrons between atoms with the effect of lower the energy of the
system as a whole.
The chemical bond is a binding force to hold atoms together to form an aggregate with sufficient stability for the chemists to
consider the aggregate an independent species. There are three main types of chemical bonds.
Types of Bonds
Ionic bond
These are formed as a result of electron transfer between an electropositive element and an electronegative element to form
cations and anions. The electrostatic attraction between cations and anions form the ionic bond. E.g., NaCl.
Covalent bond
These are formed as a result of sharing of electrons between two electronegative atoms. Both atomic nuclei attract the shared
electrons which are mainly located at the mid-point between the two bonding nuclei, resulting in a net attractive force between
the two nuclei. This electrostatic force holding the atoms together forms the covalent bond. This accounts for the formation
of molecules in elements (e.g., H2) and for formation of molecular compounds (e.g., CCl4).
Metallic bond
Electropositive elements(e.g., Na) can share
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MbT essay summary
This is a good summary of the types of bonding exhibited by molecules, with a fairly thorough talk about CFC's at the end. It is detailed and contains advanced descriptions of AS level work. This piece lacks diagrams, which would have made understanding some of the topics covered much easier
This piece of work is 3 stars out of 5.
