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Word Count: 442
Chemical bonds are what make up the world In bonds elements are held together and form compounds that may have new physical and chemical properties There are two main kinds of bonds they ionic and covalent In bonding the goal of the atoms involved is to reach a level of stability with less energy In order to reach the epitome of stability as in the case of noble gases an atom strives to complete its outer shell Either losing or gaining electrons may do this which concludes in an ionic bond or the sharing of electrons with other atoms which makes a covalent bond Ionic bonds as you can probably surmise form from ions Ions are made when an atom gains an electron to form a negative ion or loses an electron to form a positively charged ion As an example of an ionic bond lets used the elements Cl and Na First we must understand that there is an attraction between them because one is positive and the other negative and that the Cl atom contains seven valence electrons and Na one So as the atoms bond the Na loses its valence electron and Cl gains it making its outer shell complete and it more stable During this reaction light and heat are given off This shows an exothermic reaction which is a release of energy The electrostatic energy between the two holds them together Ionic bonds are useful because in a liquid state it can conduct electricity This is possible because it contains ions That doesnt conduct electricity in the solid state because there is not enough room within the molecule The substance produced by this bond is table salt Other salts such as CaCl rock salt are formed in the same way and although they have a different crystalline structure they do possess the same physical properties Covalent bonds as stated earlier are when the atoms share electrons with each other
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