Atomic Theory

JJ, Thompson

John Dalton

The Four Elements

Bohr-Rutherford

Water

Fire

Earth

All atoms of the same element are identical in mass size and other properties

in chemical reactions atoms are separated, combined, and/or rearranged

Atoms cant be divided, created nor destroyed

Atoms combine in whole number ratios to create compounds

All matter is composed with atoms

Democritus

He disagreed with the four elements, but no one believed him

Discovered a particle smaller than the atom called a corpuscle.

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Ernest Rutherford

He disapproved Thompson's plum pudding model with the gold foil experiment

Wind

A Greek Theory

The model is incorrect

The atom consist of a positively charged nucleus that are orbited by negatively charged electron in different energy level

Easiest way to draw the model

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