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Chemistry Red Lab
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Published on Nov 20, 2015
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1.
CHEMISTRY RED LAB
BY: JAKE MAYES
2.
Parts of Atom
Proton- in nucleus and carries a positive charge has a weight of 1 amu
Neutron- in the nucleus, it has no charge, and it carries a weight of 1 amu
Electron- in the cloud around the nucleus, it has a negative charge
Proton and neutron carry 99.9% of the weight in an atom
3.
THE BEGINNING
The first person to really get into an atom was a Greek philosopher named Democritus
He began the search for a description of matter more than 2400 years ago
He wondered how far can matter be divided until it can not anymore
4.
DALTON
Dalton layed the foundation for matter and atom research
He discovered- All matter is made of atoms
All atoms of one element are the same
Compounds are 2 or more different kind of atoms
Atoms can't be created or destroyed
5.
DALTONS FLAWS
atoms are indivisible not true because of neutrons, protons.
Atoms can be smashed and broken into chips.
6.
THOMSON THEORY
Discovered the electron
Model discovered due to his theory
Plum pudding model
Christmas pudding model
Chocolate chip cookie model
7.
RUTHERFORDS THEORY
Stated that most the atom weight is in the center
The middle only takes up 1 billionth of the volume
The majority of an atom is empty space
8.
BOHR'S THEORY
Electrons orbit the nucleus
They lose no energy and have a set way to go
Low energy orbit closer to nucleus
High energy are more away
9.
CHANGES SINCE
1932 James Chadwick "found" the neutron
Frederick Soddy was able to discover isotopes
The neutron made the isotope discovery possible
10.
CURIE
Irene curie discovered the proton and neutron
Did not realize the signifigance
Ripped off by James Chadwick
11.
MILKAN
Proved Thomson's theory right
mass of an electron is at least 1000 times smaller than the smallest atom.
Jake Mayes
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