Dalton's Atomic Theory (1803)

Dalton's Atomic Theory, explains how elements are composed of indivisible particles called atoms, solidifying the idea that matter is made up of discrete, tiny particles.

Dalton's Atomic Theory, proposed by John Dalton in 1803, marked a significant milestone in the development of modern atomic theory.

It postulated that elements are composed of indivisible particles called atoms, which are indestructible and retain their identity in chemical reactions.

According to Dalton, atoms of a given element are identical in mass and properties, while atoms of different elements have different masses and properties.

Dalton's theory also suggested that compounds are formed when atoms of different elements combine in simple, whole-number ratios, providing a fundamental framework for understanding chemical combinations.

While some aspects of Dalton's theory have been revised and refined with advancements in scientific understanding, his contributions laid the groundwork for the modern atomic theory, playing a pivotal role in the development of chemistry and the understanding of the nature of matter.