![]() ![]() Although Democritus' theory was remarkable, it was rejected by Aristotle, one of the most influential philosophers of Ancient Greece and the atomic theory was ignored for nearly 2,000 years. Therefore, changes in matter were a result of dissociations or combinations of the atoms as they moved throughout the void. In 1808 he proposed that a chemical element consisted of tiny particles (atoms), all with the same chemical properties. In addition, Democritus believed that the atoms differed in size and shape, were in constant motion in a void, collided with each other and during these collisions, could rebound or stick together. Around 400 B.C.E., the Greek philosopher Democritus introduced the idea of the atom as the basic building block matter. One passage of Democritus that does survive is a dialogue between the intellect and the senses. And the arguments I'd use are not entirely different from the ones Democritus used: mostly they hinge on inherent mathematical difficulties with the continuum. Democritus, theorized that atoms were specific to the material which they composed. If you want an ignorant, uninformed layperson's opinion, my money is on the atomist side. He called these small pieces of matter " atomos," the Greek word for indivisible. ![]() Democritus knew that if a stone was divided in half, the two halves would have essentially the same properties as the whole.Therefore, he reasoned that if the stone were to be continually cut into smaller and smaller pieces then at some point, there would be a piece which would be so small as to be indivisible. The concept that matter is composed of discrete particles is an ancient idea, but gained scientific credence in the 18th and 19th centuries when scientists found it could explain the behaviors of gases and how chemical elements reacted with each other. One of the first atomic theorists was Democritus, a Greek philosopher who lived in the fifth century BC. Atomic theory is the scientific theory that matter is composed of particles called atoms. In this lesson, we will review the development of the atomic theory. Dalton published a paper about atoms which. Atomic Structure, Periodicity, and Matter: Development of the Atomic Theory John Dalton came up with his atomic theory based on the results of his experiments. ![]()
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