Democritus & Aristotle
What did the first model of the atom look like?
A sphere
What was Thomson's model called?
Plum Pudding Model
What experiment did Rutherford do?
The Gold Foil experiment
How many books did Millikan make
At least 10
Describe the first model of the atom.
A simple sphere.
Did Aristotle believe that atoms existed?
No
Dalton proposed what?
That all things are made of Atoms.
What did Bohr's model show?
It showed the negative charged electrons surrounded the Nucleus
What did Schrodinger name his model
Quantum Mechanical model
During the gold foil experiment the particles bounced off what part of the atom?
The nucleus.
What were Aristotle's four states of matter?
Hot, dry, cold, and wet
Dalton said that Atoms are what?
Uncuttable
What did Bohr propose in his idea?
That the electrons orbited or went on different energy levels around the Nucleus.
How can one determine the size of an atom?
with Einstein's calculations
Which scientist got an element named after him?
Rutherford; Rutherfordium 104
When did Democritus first introduce the atom?
400 BC
What did Thomson propose about the atom?
That the atom was a positively charged molecule that has negatively charged electrons throughout.
How are the different energy levels shown?
By using integers and Quantum numbers for the different levels the smallest ones closest to the Nucleus.
What is the charge of an electron called?
fundamental electric charge
When was the atom first introduced?
400 BC
Why did Democritus name it the "atom?"
It was named after the Greek word "atomos" which means "indivisible."
Dalton said that all atoms of the same element are ____ while all the atoms of another element are ____ from other elements.
identical; different
Which one of the two had an element named after him and what has it called?
Rutherford. The element was called Rutherfordium.
What did Millikan publish before his death?
Electrons, Protons, Photons, Neutrons, Mesotrons, Cosmic Rays, and his Autobiography
What does the Greek word "atomos" mean?
indivisible