2.3 Electron arrangement

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Learning Goals: (2 hours)

• Describe the electromagnetic spectrum.
• Distinguish between a continuous spectrum and a line spectrum.
• Explain how the lines in the emission spectrum of hydrogen are related to electron energy levels.
• Deduce the electron arrangement for atoms and ions up to Z = 20.

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Pre-discussion Activity
Animated lecture about the electromagnetic spectrum:
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/radiation/the_electromagnetic_spectrumact.shtml (take notes on the quiz at the end)
Homework: Complete Pre-discussion Electromagnetic Spectrum at http://quizstar.4teachers.org/

Homework: Save a copy of the periodic table with electron shells:
http://upload.wikimedia.org/wikipedia/commons/a/a8/Periodic_Table_of_Elements_showing_Electron_Shells.svg

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Khan Academy Lecture
Orbitals (MYP & DP)
http://www.khanacademy.org/science/chemistry/v/orbitals
More on Orbitals & Electron Configuration (MYP & DP)
http://www.khanacademy.org/science/chemistry/v/more-on-orbitals-and-electron-configuration

Extra Information
Electron Configuration (DP)
http://www.khanacademy.org/science/chemistry/v/electron-configurations
Electron Configurations 2 (DP)
http://www.khanacademy.org/science/chemistry/v/electron-configurations-2
Valence Electrons (DP)
http://www.khanacademy.org/science/chemistry/v/valence-electrons

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CK-12 Chemistry
Read pdf or online

Chapter 5: The Bohr Model of the Atom http://www.ck12.org/flexbook/chapter/7512
Homework: Complete Chapter 5: The Bohr Model of the Atom at http://quizstar.4teachers.org/

Chapter 6: The Quantum Mechanical Model of the Atom http://www.ck12.org/flexbook/chapter/7513
Homework: Complete Chapter 6: The Quantum Mechanical Model of the Atom at http://quizstar.4teachers.org/

Chapter 7: The Electron Configuration of Atoms http://www.ck12.org/flexbook/chapter/7514
Homework: Complete at http://quizstar.4teachers.org/

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Activity

Interactive Periodic Table: http://www.learner.org/interactives/periodic/periodic_table.html

Introduction to Electron Configuration: http://www.learner.org/interactives/periodic/elementary.html

Inquiry Lab: Chemical Preservatives

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