'10 13 3 electrons' diaporamas de présentation

ATOMIC STRUCTURE

ATOMIC STRUCTURE. HISTORY OF THE ATOM. Democritus develops the idea of atoms. 460 BC. He pounded up materials in his pestle and mortar until he had reduced them to smaller and smaller particles which he called. ATOMOS ( greek for indivisible ). HISTORY OF THE ATOM. 16 X. +. 8 Y.

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Atomic Structure

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Chemical Formulas

Chemical Formulas. Chapter 7. H 2. H 2 O. NH 3. CH 4. A molecule is an aggregate of two or more atoms in a definite arrangement held together by chemical bonds. A diatomic molecule contains only two atoms. H 2 , N 2 , O 2 , Br 2 , HCl, CO.

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