• Unit 3 Electron Configurations and Periodic Trends
     
    Please find the PowerPoint presentations that were used during this unit below.  These can be used to complete the notes if you missed any notes or to review for the test.  If you do not have PowerPoint on your computer, please see tab entitled "What if I don't have PowerPoint?" for some options.
     
    Day 1 - Waves and Emission Spectra.  The topics included the parts of the wave, the electromagnetic spectrum, and emission spectra lines.  In addition, a flame test experiment was conducted to demonstrate the light emitted from various excited atoms (See the Question 1 video below for help). 
     
    Day 2 - The History of the Electron.  The topics of the day dealt with the theories around the electron and its movement around the nucleus.  After these topics were discussed, a simulation of the distribution of the electrons in the atom was conducted using peas.
    HW - Vocabulary Crossword Puzzle (Chapter 4)
     
    Day 3 - Quantum Numbers and Electron Configurations.  The objective of the day was to start writing electron configurations.  Before this could be done, a brief explanation of the four different quantum numbers was given (see the Study Guide Question 2 and 3 video for help).
    Electron Configuration Notes Video (Don't forget that sometimes you may have to save the video to your hard drive to watch it but right mouse clicking and selecting "save link as".
     
    Day 4 - Shortcuts for Electron Configurations.  The topics of this day were finding the ending of an element's electron configuration based on its location on the periodic table, noble gas notation of electron configurations and Lewis Formulas. (see Study Guide Video for Question 4 and 5 or the other two tutorial videos below)
     
    Day 5 - History of the Periodic Table.  The scientist that helped to develop today's periodic table were discussed along with parts of the periodic table.
    HW - Update the Scientist Timeline Sheet
     
    Day 6 - Periodic Trends.  Atomic radius, ionic radius, electronegativity, and ionization energy were discussed along with thier trends on the periodic table (See Question 6-10 of the Study Guide for assistance).
     
    Day 7 - Periodic Families.  The various families of the periodic table were discussed on this day with video clips to help demonstrate their properties.
    Some of the videos can be found at the following web addresses:
    http://youtube.com/watch?v=m55kgyApYrY - Brainiac alkali metal clip
    http://www.youtube.com/watch?v=ZmJ0N5-MG2M - potassium (alkali metal) and bromine (halogen) clip
    As always, do not attempt anything that you seen in any video on youtube.  Many of the individuals do not realize how dangerous what they are doing is and some of the things they do could easily lead to injury and possibly death.
     
    Day 8 - Periodic Table Reconstruction Lab and Review.  Part of the time with be conducting a paper and pencil lab in which we try to reconstruct the periodic table based on clues.  Then, the remaining time will be used to review for the Unit 3 Test.
     
    Review Materials - As they are ready, they will become hyperlinked
    Return Block Answer Key (Front     Back
     
    Study Guide Video - Because the length of the video, it had to be divided into smaller clips.  Please click on the link below to see the process of solving each question or right mouse click and save target to download the video to watch at a later time.
     
     
    As well, here are a few other tutorial videos (windows media player format) that I have made to help with certain key concepts of this unit that were requested by certain students.  Please use them in the studying process and as always, please let me know if there are any other topics that you need explained a little better.
     
     
     
    As always, please email me with any questions that you may have (jjmorris@augusta.k12.va.us)
Last Modified on November 11, 2020