Democritus theorized that all matter was made up of indivisible, microscopic substances which were held together in various combinations that formed the objects that were perceived by our eyes. Because the word in Greek for indivisible is 'atomos', this theory gave rise to the atom. Democritus proposed this theory about 420 B.C.
Democrititus was the first person to theorize that all matter was composed of atomos (atoms), and that e.ach type of material was mad up of its own atomos. Hence, creating unique properties.
1. Democritus supposed that all the matter is formed from atoms, indivisible particles.
2. John Dalton is especially known for his atomic theory:
· Elements are made of tiny particles called atoms. · All atoms of a given element are identical. · The atoms of a given element are different from those of any other element. · Atoms of one element can combine with atoms of other elements to form compounds. · A given compound always has the same relative numbers of types of atoms. · Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process. A chemical reaction simply changes the way atoms are grouped together.
A greek philosopher named Democritus
Democritus did. The modern version of the atomic theory is based on the research of Dalton.
John Dalton: In the late 1700s, John Dalton developed the atomic theory on which all current understandings are based.
he made the Celsius temperature scale
For example clothes and shoes made from synthetic polymers.
john Dalton
A greek philosopher named Democritus
true
Leukippus, Democritus, Dalton, Bohr, Rutherford, Thomson and many others.
It was John Dalton in the early 1800s.
Leukippus, Democritus, Dalton, Bohr, Rutherford, Thomson and many others.
Some say that Democritus named the atom "ATOMUS" which means "invisible" others say John Dalton but i would go with the former (Democritus).
When an ancient Greek asked if an object could be subdivided indefinitely, some said yes and some said no. Neither side had any physical evidence for their point of view, nor did they seek any. The only contribution to modern science, apart from the question itself, was the word atomos (indivisible) that Democritus used in the debate. John Dalton made a contribution of a quite different order. He said that matter did consist of atoms; he said that all atoms of the same element were identical atoms with the same mass. He cited physical (that includes chemical) evidence to support his assertions. Dalton said more about atoms, but all based on evidence, rather than opinion. Democritus's theory was philosophy. Dalton's was science as we understand it today.
Democritus did. The modern version of the atomic theory is based on the research of Dalton.
who said that all substances are made up of atomsIt's actually Dalton, because it sayes so in my textbook for school.
John Dalton. N.B.: John Dalton [born: September 6, 1776; died: July 27, 1844, at age 67] was an English chemist and physicist who claimed matter was made up of tiny particles and that these particles were identical for any given kind of matter. Moreover, he claimed these particles were indivisible and could neither be created nor destroyed in any chemical process, only be altered in the manner they were grouped.
well, according to my knowledge, he didn't really "create" anything in fact he found out that everything is made of atoms but he described atoms as being solid spheres. But many people disagree with his theory. Modern Chemistry would have not been the same without the contribution of our future scientist Democritus the man who developed atomism.