Light, Energy, And More

Light, Energy, and More October 23, 2007 Chemistry

Recap… ,[object Object],[object Object],[object Object],[object Object]

When we heat metal what happens?

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Max Planck (1900) ,[object Object],[object Object],[object Object],[object Object]

Vocab Word!!! ,[object Object],[object Object],[object Object]

If energy is now quantized…how can we determine the amount of energy of a quantum? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Time to put these words into action! ,[object Object],[object Object],[object Object]

Some questions to answer… ,[object Object],[object Object],[object Object],[object Object],[object Object]

According to Planck’s Theory… ,[object Object],[object Object],[object Object],[object Object]

The Big Mystery of the 1900’s… ,[object Object],[object Object]

Photoelectric Effect ,[object Object],[object Object]

Albert Einstein (1905) ,[object Object],[object Object],[object Object]

[object Object],[object Object]

Now light is not just a wave… ,[object Object],[object Object],[object Object]

NEW WORD!!! ,[object Object],[object Object]

What Einstein added… ,[object Object],[object Object],[object Object]

Mystery Solved! ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Revised Planck’s Work… ,[object Object],Photon

Time to do a little work…. ,[object Object],[object Object],[object Object]

A couple more…  ,[object Object],[object Object],[object Object]

Practice makes perfect…  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How does this work? (Neon Signs)

What do we know about neon signs? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

EM spectrum ,[object Object],[object Object],[object Object]

What happens when we pass light from neon gas or hydrogen gas through prism? ,[object Object],[object Object],[object Object]

ATOMIC EMISSION SPECTRUM (AES) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hydrogen Atom ,[object Object],[object Object],[object Object],[object Object],[object Object]

Neils Bohr (1913) ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

Bohr’s Hydrogen Orbits… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bohr’s Quantum Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

When we add energy, what happens to electron? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

NEW EQUATION ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Names for these lines… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Problems with Bohr’s Model ,[object Object],[object Object],[object Object],[object Object],[object Object]

Louis De Broglie (1924) ,[object Object],[object Object]

If waves can have particle like characteristics, then can particles, such as electrons, have wave like characteristics???

What he knew… ,[object Object],[object Object],[object Object],[object Object]

What does this equation do? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Food for thought… ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Problem time… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Another one… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Practice makes perfect  ,[object Object],[object Object]

Werner Heisenberg (1901-1976) ,[object Object],[object Object]

Problem with finding the position of an electron ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Heisenberg Uncertainty Principle ,[object Object]

Erwin Schrodinger (1926) ,[object Object],[object Object],[object Object],[object Object]

Quantum Mechanical Model of the atom

The Quantum Mechanical Model ,[object Object],[object Object],[object Object],[object Object],[object Object]

What the wave function tells us ,[object Object],[object Object],[object Object],[object Object]

New Word ,[object Object],[object Object],Orbital

What did Bohr assign to electron orbitals? ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Principle energy levels contain… Energy Sublevels

[object Object],[object Object],[object Object],[object Object],[object Object],UPPER LEVEL

[object Object],[object Object],[object Object]

Second quantum number Angular Momentum Quantum Number (l)

What the number of l means… ,[object Object],[object Object],[object Object],[object Object],[object Object]

S P D F: THE SUBLEVELS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

n = # of sublevels per level n 2 = # of orbitals per level Sublevel sets: 1 s, 3 p, 5 d, 7 f

Orbitals combine to form a spherical shape. 2s 2p z 2p y 2p x

Remember… ,[object Object],[object Object],There are two more quantum numbers (3 and 4) we will discuss next class

Third Quantum Number ,[object Object],[object Object]

Fourth Quantum Number ,[object Object],[object Object],[object Object]

Recap… ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Electron Configuration ,[object Object],[object Object],[object Object],[object Object],[object Object]

Ground state electron configuration ,[object Object],[object Object]

Three Rules for Electron Arrangement ,[object Object],[object Object],[object Object]

Aufbau Principle ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Some important things to remember about Aufbau… ,[object Object],[object Object],[object Object],[object Object]

Pauli Exclusion Principle ,[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

Hund’s Rule ,[object Object],[object Object],[object Object],[object Object]

Light, Energy, And More

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Light, Energy, And More