Write the atomic # & atomic mass for one of the following elements:
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Transcript of Write the atomic # & atomic mass for one of the following elements:
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Write the atomic # & atomic mass for one of the following elements:
http://www.yeousch.com/community/threads/science-jokes-for-the-fellow-nerdlings.7127/
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Agenda
Energy Levels Bohr Diagrams Review Game
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The most frequently used models…
Two atomic models are used most frequently:• Schrödinger
• Bohr Schrodinger’s is the most accurate, but
Bohr’s is more simplistic Bohr’s model is accurate for simple
atoms
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Electron Energy
Bohr discovered that e- can be found at different energy levels, but can’t be found between energy levels.
The energy level the e- is usually found in is known as the ground state.
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Excited e-
If an e- gains energy, it can move to another energy level • The e- is now in the excited state
Eventually the e- will loose its energy and return back to the ground state.• When this happens light is emitted
• Different elements give off different colors (fireworks)
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Energy and the Atomic Model
Using this information about energy, Bohr created his own atomic model
e- closest to the nucleus have the least amount of energy
e- farthest from the nucleus have the most
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Energy Levels (Shells)
Bohr labeled these energy levels as;• k, l, m, n, o, p, q
Shell k can only have 2 e- The rest can have 8 e- The lower energy levels must be at
capacity before e- can move to higher energy levels
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What this means…
If you had 16 e- You can do this for
every element on the periodic table
This led to the Bohr Diagram
K L M
2 e- 8 e- 6 e-
http://chemistryiseasy.com/
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Steps to create a Bohr Diagram
1. Find the number of protons.
2. Find the number of neutrons.
3. Find the number of electrons.
4. Draw a circle to represent the nucleus.• Insert the number of protons and neutrons.
5. Draw enough energy shells to house all of the electrons.
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Examples
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Review Game
Reviewing Atomic Structure and Bohr Diagram practice
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First things first…
Wednesday is the start of Baseball Playoffs!
http://ladylovespinstripes.com/
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Rules of Baseball Science
You will be split into two teams Each team will send a player “to bat” The batting player has the option of:
• Single
• Double
• Triple
• Homerun If you miss the question – out If you take more than 10s to answer - strike
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Baseball Science
http://nesn.com/fenway-park-stadium-guide/