CHAPTER 3

Atoms and Atomic Masses

General Information
- Atoms Molecules and Ions - Study guide to chapter 2 of Zumdahl text; includes Dalton's Atomic Theory, Molecules and Ions, Introduction to the Periodic Table, etc. (Chem 12, PSU York Campus).
- Classic Chemistry Page - History of Chemistry; links to classical papers and information about scientists (Carmen Giunta, Dept. of Chemistry, Le Moyne College).
- Structure of the Atom -
- Atomic Theory - Key concepts; basic information.
- The Atom Basic information on atom and periodic table; includes self-quiz; good summary of important information.
- Basic Atomic Information - General introduction to atomic structure (Rowan Beckworth, Chemistry Central) .
- The Atom Basic information about the atom with links to other sites.
- Spectroscope - How to use and calibrate a spectroscope.

Laws of Chemical Combination
- Atoms and Molecules: The Atomic Theory of Matter - Law of Conservation of Mass, Law of Constant Composition, Law of Multiple Proportions (from Introductory College Chemistry I Outline by James A. Plambeck, University of Alberta).
Dalton's Atomic Theory
- Particles of Matter and John Dalton - Discusses law of conservation of mass, law of constant composition of compounds, and law of multiple proportions (Introductory College Chemistry I, Dr. James A. Plambeck, University of Alberta).
- Atoms and Molecules: The Atomic Theory of Matter - Presents atomic theory as stated by Dalton and explains the law of conservation of mass, the law of constant composition and the law of multiple proportions (Introductory College Chemistry I, Dr. James A. Plambeck, University of Alberta).
- J.J. Thomson and the Discovery of the Electron includes links to other Thomson materials on the web (ChemTeam, Diamond Bar H. S.).
Subatomic Particles
- The Greek Concept of Atomos: The Indivisible Atom Includes links to other Web sites containing information about the Atomists (ChemTeam, Diamond Bar H. S.).
- Greek Theory and Roman Practice - Introduction to the History of Chemistry (James A. Plambeck).
- Atoms and Molecules: The Chemical Nature of Atoms - Includes information about Rutherford's model, isotopes & atomic masses, moles of atoms, molar atomic masses, natural abundance of isotopes (Introductory College Chemistry, Dr. James A. Plambeck, University of Alberta).
- Rutherford's announcement of the atomic nucleus concept - The Scattering of the [alpha] and [beta] Rays and the Structure of the Atom by Professor E. Rutherford, F.R.S., From the Procedings of the Manchester Literary and Philosophical Society, IV, 55, pp. 18-20; Abstract of a paper read before the Society on March 7, 1911.
- Discovery of Top Quark - Fermi Labs News Release; link to background material on top quark; detailed (Fermi Labs).
- The Particle Adventure - An Interactive Tour of the Inner Workings of the Atom and the Tools for Discovery (includes movies and graphics; project summary provides good background information on quarks and forces) (Contemporary Physics Education Project).
Atomic Mass
- Stoichiometry (part 1) - Discussion of Chemical Equations and Atomic Masses (CHEM 12, PSU York Campus).
Development of the Periodic Table
- Periodic Chart of the Elements - Discussion of the development of the periodic table (Introductory Chemistry I, Dr. James A. Plambeck, University of Alberta).
- Periodic Table - Color graphic of periodic table showing families (Chem 101, Univ. of IL).
- Mineralogy I: Lecture 7 - Includes sections on: Development of the Periodic Table, Summary of Quantum Numbers, Formation of Ions, Bond Types (by J. M. Rice; Fall 1995).
- Mendeleev's Statement of the Law of Periodicity - Contains a link to Modern Statement of the Law of Periodicity.
- Dmitry Ivanovich Mendeleyev - Biography information including image.
- Ich bin Mendelejeff Biography of Mendeleev with link to a caricature by William Jensen (WWNFF History of Chemistry Module).
- Atomic Structure and Periodicity - Atomic Spectra, Bohr model, Quantum Mechanical Model, Energies of Orbitals, Electron Configurations, Valence Electrons, Periodic Table, Periodic Trends (CHEM 12, PSU York Campus).