Section outline

  • A photo is shown of the Crab Nebula.

    Figure 6.1 The Crab Nebula consists of remnants of a supernova (the explosion of a star). NASA’s Hubble Space Telescope produced this composite image. Measurements of the emitted light wavelengths enabled astronomers to identify the elements in the nebula, determining that it contains specific ions including S+ (green filaments) and O2+ (red filaments). By: Rice University Openstax CC BY NC SA

    Chapter Outline
    • Composition of the Atom
    • Chemical Symbols
    • Isotopes
    • Atomic Mass
    • Electron Configurations and the Periodic Table


    Upon completion of this module, you will be able to:

    1. Describe the Electron Configuration of an Atom by using the Bohr Model (CLO2)(CLO6)
    2. Compute the Atomic Mass of an Atom (CLO5)(CLO6)(CLO7)
    3. Identify Isotopes of Common Elements (CLO6)(CLO7)(CLO8)
    4. Use the Periodic Table to Obtain Information (CLO6)(CLO8)


    To achieve these objectives:

    1. Read and view Module 6: Chapter 6: The Atom and Elements in Moodle
    2. Read Chapter 6: The Atom and Elements in the Exploring the Physical World Introductory Chemistry and Physics Pressbook
    3. Complete the Module 6: Chapter 6: The Atoms and Elements Assignment
    4. Complete the Module 6: Chapter 6: The Atoms and Elements Discussion
    5. Complete the Module 6: Video (VWS) Assignment - 
    6. Complete the Module 6: Activity Assignment -  Isotopes and Atomic Mass
    7. Complete the Module 6: Report Assignment - Isotopes and Atomic Mass
    Note the checkboxes to the right that help you track your progress: some are automatic, and some are manual. 


    Module Pressbooks Resources and Activities

    You will find the following resources and activities in this module at the Pressbooks website. Click on the links below to access or complete each item.

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