The formation of new products (compounds) results from the rearrangement of existing atoms (reactants).This implies that during chemical reactions, no atoms are created nor destroyed. Atoms are neither created nor destroyed.Atoms of different elements combine in fixed ratios to form compounds.This can also be stated as all the atoms of an element have identical mass while the atoms of different elements have different masses. The properties of all the atoms of a given element are the same including mass.The matter is made up of indivisible particles known as atoms.Learn Dalton’s Atomic Theory from this Video Lecture Stoichiometry and Stoichiometric Calculations.Properties of Matter and Their Measurement.Browse more Topics under Some Basic Concepts Of Chemistry Let us now look at the postulates of this theory. He published this theory in a paper titled “A New Chemical Philosophy” indeed the philosophy was new for that era. In 1808, John Dalton postulated the famous Dalton’s Atomic Theory. Due to the lack of technological setup back then, scientists had very limited information on this theory.Īlmost after two thousand years, the works on the simplifying matter was materialized by scientist, John Dalton. He named these particles, ‘atomos’ meaning indivisible. This led to the formulation of a number of atomic theories.ĭemocritus was the first man who proposed that matter is made up of particles. They wanted to know about the fundamental particles that make matter, their properties, structure etc. Scientists and philosophers have always tried to simplify things. Matter has been one of the most important subjects of research for the science enthusiasts.
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