Lecture 4: Atoms, Elements, Atomic Theory & Structure, Atomic Mass & Isotopes

LECTURE 4: Atoms & ELements, Atomic Theory & Structure, Atomic Mass & Isotopes

• Reading: Chp. 4: pp. 93-116
• Helpful Resources:
• ATOMIC NUMBER & MASS NUMBER:
• An Introduction to Atomic Mass Links to an external site.
• What is an Ion? Links to an external site.
• Atomic Number, Mass Number and Net Charge on an Atom Links to an external site.
• What's the difference between Atomic Mass and Mass Number? Links to an external site.
• Practice Problems: Net Charge, Mass Number and Atomic Number Links to an external site.
• Extra Practice with Atomic Mass Calculations Links to an external site.
• Atomic Number, Protons, Neutrons, Charge and Isotopes Links to an external site.
• What are isotopes? Links to an external site.
• Isotope Notation & Symbols Links to an external site.
• What is a weighted Average? Links to an external site.
• How to Calculate Percent Abundance of Isotopes Links to an external site.
• Practice Problems: How to Calculate Atomic Mass Links to an external site.
• ATOMIC STRUCTURE:
• A Look Inside an Atom Links to an external site.
• A History of the Models of Atoms Links to an external site.
• Crash Course Chemistry: The Nucleus Links to an external site.
• The Discovery of the Nucleus: The Gold Foil Experiment Links to an external site.
• The Rutherford Model of the Atom Download The Rutherford Model of the Atom
• The Discovery of the Electron: The Cathode Ray Tube Links to an external site.
• The Cathode Ray Tube Experiment Download The Cathode Ray Tube Experiment
• The Charge on the Electron Links to an external site.
• The Millikan Oil Drop Experiment Download The Millikan Oil Drop Experiment