atomic structure
Storyboard Text
- Hello, I am Democritus and I propose that all matter is composed of tiny and hard particles called "atoms".
- At about 400 B.C Democritus proposed that matter is composed of tiny and hard particles called atomos which are now called atoms.
- The four parts of my theory were all matter is made of atoms that are invisible, all atoms of a given element are identical in mass and properties, compounds are a combination of two or more and lastly a chemical reaction is a rearrangement of atoms.
- In the year 1808 John Dalton created the first atomic theory. He also found the atomic mass with other chemists and biochemists.
- On 1869 Dmitri Mendeleev created the periodic table with the Mendeleev theory. Mendeleev theory was arranging 63 elements based on atomic mass into a periodic table.
- I created the periodic table with mendeleev theory along with it I created 60 elements for it.
- In the year 1910, Ernest Rutherford, the nucleus and the protons inside the nucleus through the gold foil experiment. In 1911 he also proved Plum Pudding wrong.
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- The neutrons are found inside the nucleus and are uncharged, thus giving them their name.
- In 1932, James chadwick discovered the neutrons found indside nucleus
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