Notes - Section 2.6-2.9

Notes - Section 2.6-2.9 - Paul Jackman Chemistry CHE 106...

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Paul Jackman September 15, 2009 Chemistry CHE 106 – M029 Section 2.6-2.9 Notes 2.6 Molecules and Molecular Compounds Only noble-gas elements are normally found in nature as isolated atoms Most matter is composed of molecules or ions Molecule- an assembly of two or more atoms tightly bound together Molecules and Chemical Formulas Chemical formulas represent molecules A molecule that is made up of two atoms is called a diatomic molecule Elements that normal occur as diatomic molecules are H, O, N, and the halogens Compounds that are composed of molecules contain more than one type of atom and are called molecular compounds Molecular and Empirical Formulas Chemical formulas that indicate the actual numbers and types of atoms in a molecule are called molecular formulas Chemical formulas that give only the relative number of atoms of each type in a molecule are called empirical formulas Picturing Molecules The structural formula of a substance shows which atoms are attached to which within the molecule Ball-and-stick models and space-filling models used 2.7 Ions and Ionic Compounds
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This note was uploaded on 02/09/2010 for the course CHE CHE 106 taught by Professor Korter during the Fall '09 term at Syracuse.

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Notes - Section 2.6-2.9 - Paul Jackman Chemistry CHE 106...

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