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Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

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Quantum Mechanics and the Bohr Model

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Page 1: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Quiz 11-7-12• Identify the symbols

1. ν2. λ3. Ca4. K5. Na6. B7. Ba8. Mg9. E10.c

Page 2: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Memorize the following

Page 3: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Quantum Mechanics and the Bohr Model

Page 4: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Electrons are arranged in energy levelsThe normal energy state is called the ground state

The excited energy level is called the excited state.

Electrons gain energy

When electrons relaxback down to the ground state, electromagneticradiation is given off.Light = electromagnetic radiation

Energy is released in the form of light

Page 5: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

Electrons are arranged in energy levels.

Electrons gain energy

When electrons relax back down to the ground state electromagneticradiation is given off. The more energy levels the electron travels, the more energetic the “light”.

Energy in the form of light

more energygiven off as light

less energygiven off as light

Page 6: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Higher energy = higher frequency

• Lower energy = lower frequency

Page 7: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

How do you calculate the energy given off by electrons when they relax back down to the

“ground state”?

Page 8: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 1 – underline important information.• Step 2 – identify the knowns and unknowns.

• Step 3 – identify the correct equation.

• Step 4 – rearrange the equation to solve for the unknown.• Step 5 – solve for the unknown.

Page 9: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 1 – underline important information.

Page 10: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 1 – underline important information.• Step 2 – identify the knowns and unknowns.

Page 11: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 1 – underline important information.• Step 2 – identify the knowns and unknowns.

• Step 3 – identify the correct equation.• E = h ν or c = λ ν

Page 12: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

c = λ ν Step 4 – rearrange the equation to solve for the unknown.

Page 13: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

c = λ ν

• Step 5 – solve for the unknown.

Page 14: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 1 – underline important information.

Page 15: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 2 – identify the knowns and unknowns.

Page 16: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• Step 3 – identify the correct equation.• E = h ν or c = λ ν

Page 17: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

• E = h ν or c = λ ν

• Step 4 – rearrange the equation to solve for the unknown.

Page 18: Quiz 11-7-12 Identify the symbols 1.ν 2.λ 3.Ca 4.K 5.Na 6.B 7.Ba 8.Mg 9.E 10.c

HW

• By Wednesday Finish all of the “light math” worksheets.

• 11/8 Page 17 due• 11/9 page 19 due• 11/14 page 20 due• Thursday Lab page 21• extra credit sheets pp 23, 27 mv = momentum– v in momentum is VELOCITY not ν (frequency).