Module 2: Atomic Structure and the History of Atomic Theory

Atomic Structure Timeline

ClocksAssessment IconUsing what you have learned about the history of atomic theory in this module, create a digital timeline which outlines the important discoveries and details in the evolution of understanding of the structure of the atom through the discovery of the nucleus. The digital timeline should be structured around each of the eight important topics or people listed below.

For each of the topics or people listed below, you will need to include the year (or approximate year), the theory was proposed, the experiments associated with the theory, and an explanation of the importance of the theory or experiment. Your digital timeline should be neat, clearly labeled, and should include any images or illustrations that help clarify the information being presented.

The topics or people that must be included in your timeline are:

  • Ancient Theory/Democritus
  • John Dalton
  • J.J. Thomson
  • Ernest Rutherford
  • Henri Becquerel
  • Dmitri Mendeleev
  • Marie and Pierre Curie
  • Henry Moseley

You must include the following vocabulary words correctly in the timeline; however, you are not limited to just these words:

  • Electron
  • Nucleus
  • Alpha Decay
  • Beta Decay
  • Gamma Ray
  • Isotope
  • Radiation
  • Periodic Law
  • Atomic Theory
  • Cathode Ray Tube Experiment
  • Gold Foil Experiment
  • Plum Pudding Model

Before you begin, access the Digital Timeline of Atomic Structure Rubric to make sure that you include all of the items required for full credit. You may need to use resources outside of this course to complete this assignment. If so, please submit a Works Cited document. If you need assistance, visit the Developmental Module for information on citing any resources that you used.

Options to create your digital timeline include the following:

  • Create a new file in a paint or graphics program and utilize the software to create the assignment. The, submit your work to the assignment’s dropbox.
  • Use a mobile or computer-based application to create an image or document. Then, email or export the final product for submission to the assignment’s dropbox.

Assiignment Icon
Once you have completed your timeline, please submit your assignment to the dropbox.

 


Once you have completed this module, please complete the module test.