Atomic Theory
Published on Nov 18, 2015
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PRESENTATION OUTLINE
ATOMOS
- Thought to be the first atomic theory.
- Everything is made up of atoms.
- Atoms are indestructible.
- There are an infinite number.
Photo by Leo Reynolds
4 NATURAL ELEMENTS
- Movement is determined by the material.
- Movement is caused my shape and appearance.
- "The four causes"
Photo by Matheus Costa
BILLIARD BALL MODEL
- Basic model of the atom.
- Helped establish many scientific concepts.
- Created foundation for modern models.
PLUM PUDDING MODEL
- Shows the atom is made up of electrons.
- Pudding - positive charge.
- Plum - negative charge.
Photo by Ann@74
POSITIVELY CHARGED NUCLEUS
- Tested with alpha particles.
- Proved plum pudding model to be incorrect.
- High central charge in small volume.
Photo by Argonne National Laboratory
MASS/CHARGE ELECTRON
Photo by Scott Hudson *
MASS/CHARGE ELECTRON
- Was proved through oil drop experiment.
- Showed the charge of a single electron.
- Millikan was helped by his graduate student.
Photo by Scott Hudson *
PROTON/NEUTRON MODEL
- Nucleus is made up of protons/neutrons.
- Explained atoms being electrically nuetral.
- Extra protons provided extra atomic mass.
Photo by NASA's Marshall Space Flight Center
