Day 22 Atomic Theory Pictures

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Transcript Day 22 Atomic Theory Pictures

Agenda
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Review
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Elements
Atomic theory
Atomic Pictures
manganese
Mn
Zn
zinc
iron
Fe
cobalt
Co
V
vanadium
Ti
titanium
nickel
Ni
scandium
Sc
Cu
copper
chromium
Cr
First to propose idea of atom
Democritus
Wrote out the first four point
atomic theory
Dalton
Found the eThomson
Experimented with cathode
ray tubes
Thomson and Goldstein
Thomson’s plum pudding
Found the electrical charge of
the eMillikan
Did the oil drop experiment
Millikan
Did the gold foil experiment
Rutherford
Found the proton
Goldstein
Found the nucleus
Rutherford
Found the neutron
Chadwick
Song Time
Atomic Theory Polka
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Dalton, Thomson, Rutherford and Bohr.
Schrödinger and Heisenberg, and many,
many more. Used their brains to venture
in the realm of inner space and found the
world of the atom was a weird and
wondrous place.
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Dalton did experiments and said, “I think
it’s clear, atoms are tiny indestructible
spheres.”
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Thomson worked with cathode rays and
said, “I disagree. A plum-pudding model
makes much more sense to me.”
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A new chapter in atomic theory started to
unfold when Rutherford played around
with atoms made of gold. When a few of
his alpha particles came bounding back,
he hypothesized a nucleus had knocked
them off the track.
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Dalton, Thomson, Rutherford and Bohr.
Schrödinger and Heisenberg, and many,
many more. Used their brains to venture
in the realm of inner space and found the
world of the atom was a weird and
wondrous place.
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Bohr saw spectral lines for hydrogen and
said, “It seems to me.. Electrons move in
orbits with specific energies.”
electron
neutron
proton
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Heisenberg said, “Forget it, there’s no
way to know the orbit or a path, where
the electron’s gonna go.”
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Schrödinger used lots and lots of fancy
mathematics, and made a model of the
atom based on quantum mechanics. It
has orbitals and those are based on
probability. The atom is a fuzzy blob of
pure uncertainty.
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Dalton, Thomson, Rutherford and Bohr.
Schroedinger and Heisenburg, and many,
many more. Used their brains to venture
in the realm of inner space and found the
world of the atom was a weird and
wondrous place.
Complete notes
If necessary
Atomic Theory Pictures
•Cut out atomic pictures and put into notebook next
to appropriate scientist.
Cation Lab
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In two days we will begin our next lab.
Read through the lab to familiarize self
with procedures and research techniques
you are not familiar with.
Begin writing introduction.
Set up your data table.
Intro
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What is the goal of the lab?
What data will you take to achieve that goal?
How will you use that data?
Who in the real world does this?
What do they look at?
How is this similar to our lab?
Homework
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Last element quiz Friday!
Intro to lab report