Atomic theory

The account of matter in terms of chemical atoms. Whole-number combinations of chemical atoms explain the law of definite proportions and law of multiple proportions for suitable pure chemical compounds.

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- Law of multiple proportions Atomic theory
- Law of definite proportions Atomic theory

Law of multiple proportions

For simple chemical compounds of two chemical elements, the masses of one combining with a fixed mass of the other occur in ratios of small integers.

Law of definite proportions

A pure stoichiometric chemical compound has fixed elemental mass ratios when isotopic composition is specified.

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Past exam of the medicine course of the University of Oxford / 1867 / First examination / Chemistry / 5 / Solution

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Atomic theory is a scientific concept that describes the nature of matter, proposing that all matter is composed of tiny, indivisible particles called atoms. The theory has evolved over time, contributing to our understanding of chemistry and physics.

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