In 1869, Dmitri Mendeleev listed the elements in order of increasing atomic weight and grouped elements that seemed to have similar chemical reactions.
The first modern atomic theory was proposed by John Dalton in the early 19th century. Dalton's theory stated that all matter is made up of tiny, indivisible particles called atoms, and that atoms of different elements have different masses and properties.
Aristotle held the view that there were five elements: fire, water, air, earth, Aether. Fire was hot. Water was wet. Air was light. Earth was cool and heavy. Aether was divine. Aristotle has since been proven wrong in this area because we have zoomed in and broadened our views of the elements.
John Dalton published his atomic theory in 1808, proposing that all matter is made up of small, indivisible particles called atoms. He also introduced the concept of atomic weight and the idea that elements are made up of atoms of a single, unique type.
The atomic theory of matter can be attributed to the ideas proposed by the ancient Greek philosopher Democritus. He hypothesized that all matter is composed of indivisible and indestructible particles called atoms, which differ in shape, size, and arrangement. Democritus' atomic theory laid the foundation for modern atomic theory.
His atomic theory. He was the one who thought that there were atoms in everything.
Atomic Theory
That the cake is a lie.
Benjamin Franklin's contribution to the atomic theory was his proposal that electricity was a fundamental force that could be understood through atomic models. He conducted experiments with electricity and proposed the idea of positive and negative charges, which later contributed to the development of the atomic theory.
J.J Thomoson was the one that published it
john dalton developed the atomic theory , which he published in 1803
published his atomic theory describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. or so my book says...
Antoine Lavoisier was a French nobleman and chemist. His contribution to the development of the modern atomic theory was his idea of the possibility of an Atomic Mass.
The most important contribution of Werner Heisenberg was the discovery of the uncertainty principle.
he contributed by creating milk
See the link below
john dalton developed the atomic theory , which he published in 1803
The contribution of anyone prior to about 1600 to the development of atomic theory might as well be "nothing whatsoever." Democritus and/or Leucippus contributed the name "atomos", but not much else; they were wrong about nearly every detail. John Dalton is just about the earliest scientist to have had any significant contribution to atomic theory, and most of what we now consider atomic theory was developed since about 1900.