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∙ 6y agoJohn Dalton
John Dalton
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∙ 6y agoAtoms are composed of particles called protons, electron, and neutrons.
They both proposed the theory that all matter consists of atoms.
Yes, as far as we know he was the first to theorize about this, although he had no way of proving his theory. He came up with the word "atomos," which is Greek for indivisible. We honor him even today by using the word atom, which is derived from it.
Fermion
Democritus and Dalton were the first to believe that all matter was made up of different indivisible elements called atoms. A lot of Dalton's atomic theory from the 1700s is still accepted in modern times.
Around 400 BC Democritus a Greek philosopher theorized that everything was composed of small indivisible particles he called atoms or "atomos".
Democritus, in the 5th century, proposed his version of atomism. States that all matter was composed of small indivisible particles called atoms.
John Dalton
i think Dalton said it
Leucippus (450?-370? BC), was a Greek philosopher. He proposed the atomic theory of matter, that all matter is constituted of identical indivisible particles called atoms. This theory was further developed by his student, Democritus.
Democritus believed that matter was made up of tiny, indivisible particles called atoms. These atoms were eternal and unchanging. Democritus also proposed that different physical properties and interactions among atoms resulted in the variety of substances we observe in the world.
A compound composed of charged particles is called an ionic compound. An atom that has become electrically charged is called an ion.
Thales taught as follows:"Water constituted (ὑπεστήσατο, 'stood under') the principle of all things."Thales drew his conclusion from seeing moist substance turn into air, slime and earth.It seems likely that Thales viewed the Earth as solidifying from the water on which it floated and which surrounded Ocean.
Atoms are composed of particles called protons, electron, and neutrons.
John Montgomery Dalton
Yes, they are called atoms.
They both proposed the theory that all matter consists of atoms.