biography

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biography

• Lance Armstrong

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Lance Armstrongthe man
Was it always glorious?
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• His biological father left before his mother gave
  birth at age 17
• One bedroom house Oak Cliff, Texas
• Stepfather abused him severely
• Found secret letters
• Stood up to his step father
• Diagnosed with testicular cancer
• Battled chemo therapy
• Won Tour De France 7 times setting all-time
  record
• Responsible for millions of dollars donated to
  cancer through his and other programs

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Iron Kids Triathlon at 13 and became a
professional triathlete when he was just 16 years
old

• His grueling training schedule nearly cost him
  his high school diploma, but private classes
  during the final weeks of the school year enabled
  Lance to graduate on time

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• Getting cancer was "...the best thing that ever
  happened to me,"

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The truth is, if you asked me to choose between
winning the TdF and cancer, I would choose
cancer. Odd as it sounds, I would rather have the
title of cancer survivor than winner of the Tour,
because of what it has done for me as a human
being, a man, a husband, a son and a father.
-Lance Armstrong.
What is your greatest victory
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Check homework

• New homework
• Worksheet 10

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Pick a student to keep time

• You have an exam next class we will review the
  last part of class

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We have shown how the electrons dwell in orbits
around the atom an S that holds 2 electronsan
P that holds 6 electrons
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The first orbital is small and has only a s
shellthe second orbital is larger and has both
a S shell and a P shell
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The lowest orbital fills first
The first shell is composed of only a S shell so
to be complete it needs only 2 electrons
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The lowest orbital fills first
The second shell is composed of a S and P shell
so to be complete it needs a total of 26 8
electrons
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Lithium atom
To be stable it can gain 7 electrons or lose one
electron
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Fluorine atom
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Oxygen

• Helium

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We have described the atom itself from the work
of Rutherford with the gold foil
experimentCrooks with the crooks tube
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But what about this electron cloud
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Is this how it is?
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Why dont the electrons fall inside the nucleous?

• What keeps them at a distance

What gives substances color
What enables florescence the ability to collect
and hold light
The answer is in the wave
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Today we are going to study more accurately the
shape of the electronic cloud
The Bohr model
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The wave form is the reason behind the glow of
the Frisbee

• The wave form is the reason behind the color of
  a flame

The wave form is the reason these pieces of metal
change color
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To understand why electrons dont fall into the
nucleus we need to understand basic physics of
wave motion
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Basically waves are accumulation of mass due to
applied energy
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Energy forces matter To clump leaving voids
Why are there Spaces between The clouds?
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The consistent and periodic ripples a boat makes
in water
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The stacking of anything in response to pressure
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Electrons are forced into specific waves around
the nucleus.

• These wave forms force the electrons into
  specific orbits called
• quantum orbitals

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Imagine if there were a million sliding beads on
a very long vibrating string.
Would they shift to any particular spots on the
vibrating string?
Nodalize !!!!!!!!!!!
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The way energy takes the form of waves is
critical to the understanding of the electron
cloud
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Wave motion forces matter into a particular
pattern

• Could this be what forces electrons into a
  particular orbit around a nucleus?

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Glow in the dark
phosphors
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The first shell has an S

• The second shell has an S and P
• The third shell has an S and P

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How do I memorize this

• You dont have to
• Look at the periodic table

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Note the electron config number
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Draw the atom including charge on nucleus and
shell layers for

• Ca 1
• Pb o
• F -1
• Neo
• Cl-1
• Mg2

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Pair up and lets draw some orbits and count some
protons and electrons
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Do the electrons always fill all the shells
underneath?

• No you can force electrons to higher levels
• Ground state of electrons
• Excited state of electrons

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Lets go over the exam review