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He named the atom and said the atom could not be cut forever.
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He disagreed with Democritus and believed that atoms could be cut.
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He said all substances are made of atoms, which are small particles and atoms cannot be divided, created, or destroyed. He said atoms are alike in the same elements and different in different elements. He said atoms can make new substances if they are joined together.
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He said there are particles inside of atoms, which could be divided. He named the negative charges, electrons.
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He discovered that atoms are mostly empty space with a small part of highly dense matter.
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He described atoms with a dense positive nucleus in the center of the atom.
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He said that electrons move along on energy levels, jumping from one level to another level.
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They said that electrons do not travel along on paths, but in electron clouds.