1800 to 1803 I'm not sure of the exact year
The atomic theory of John Dalton is from 1801-1802.
"1803"
John Dalton proposed his atomic theory in 1803, which included the idea that each type of matter is composed of one kind of atom. His work laid the foundation for modern chemistry by suggesting that atoms of different elements have distinct properties. Dalton's theory was instrumental in advancing the understanding of chemical composition and reactions.
the theory which states that all matter is made up of indivisible particles, called atoms, which combine to form molecules; formed by john Dalton in the year 1803
John Dalton never won the Nobel Prize.
1870
he didn't democriths did Dalton did first.
John Dalton postulated that atoms of the same element are exactly alike in his atomic theory developed in the early 19th century.
1803 was the year that Dalton conducted experiments in combining elements.
The theory that elements in a compound do not always combine in the same fixed ratio was proposed by John Dalton in the early 19th century. This idea laid the foundation for the development of the law of multiple proportions, which states that when elements form more than one compound, the ratios of the masses of one element that combine with a fixed mass of the other element can be expressed in small whole numbers.
1497
John Dalton proposed his atomic theory in 1803, which stated that all substances are made of atoms. His work laid the foundation for modern chemistry by introducing the idea that atoms are the basic building blocks of matter. Dalton's theory was pivotal in understanding chemical reactions and the composition of substances.