Do and AnswerDraw a Bohr Model for
OxygenHydrogen (twice)
Using the drawing try to draw a Water Molecule.
Define: atom, compound, molecule
Bohr Model
What is a Bohr Model?
• Shows all the protons, neutrons, and electrons contained within an atom.
• Protons and neutrons are drawn in the Nucleus.
• Electrons are drawn on ENERGY LEVELS or SHELLS or ELECTRON CLOUDS (the rings found around the nucleus).
Energy Levels
• Energy levels can only hold a certain amount of electrons.
Energy Level Maximum Number of Electrons
1 2 electrons2 8 electrons3 18 electrons4 32 electrons5 50 electrons
Practice
• Hydrogen
Practice
• Helium
Practice
• Magnesium
Finish the following alone:
• Sulfur• Oxygen• Copper• Francium
How are electrons arranged in Atom?
• Complete for HOMEWORK! • DUE TOMORROW• FRIDAY
Bohr Model Quiz Energy Level Maximum Number of Electrons
1 2 electrons2 8 electrons3 18 electrons
Question 1: Flourine
• Protons = 9• Electrons = 9• Neutrons = 5
Question 2: Magnesium
• Protons = 12• Electrons = 12 • Neutrons = 12
More Practice
• Nitrogen
• Calcium
In your notes:
• Make 3 circle maps for:
Proton
Neutron
Electron
Energy Levels vs. Shells
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