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Chemistry LibreTexts

2: Atoms, Molecules, and Ions

  • Page ID
  • 2.1: Atoms: Their Composition and Structure


    Protons, Neutrons, and Electrons


    Dalton's Theory 


    2.2: Atomic Number, Mass Number, and Atomic Mass Units


    2.3: Isotope Abundance and Atomic Weight


    Identify Isotopes


    Isotope Notation


    Isotope Abundance and Average Atomic Mass


    2.4: The Periodic Table


    Metal or Nonmetal


    Periodic Table: Groups


    Periodic Table: Periods


    2.5: Chemical Compounds


    Diatomic Elements




    2.6: Writing Formulas for Ionic Compounds


    Ionic or Covalent Compounds


    Ions to Compounds


    2.7: Nomenclature of Ionic, Covalent, and Acid Compounds


    Name from Molecular Formula


    Molecular Formula from Name


    Common Names to IUPAC Names



    2.8: Atoms and the Mole

    2.9: Determining the Mass, Moles, and Number of Particles


    2.10: Percent Composition


    2.11: Empirical and Molecular Formulas


    Empirical Formulas


    Molecular and Empirical Formulas from Structures


    2.12: Hydrates


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