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Unformatted text preview: Part I Properties of Atoms 1 molecule: the smallest particle of an element or compound that can have a stable or independent existence Example hydrogen oxygen phosphorus Modern DeFnitions and Terms H H O O P P P P 2 ClassiFcation of molecules based on number of atoms diatomic: a molecule made of 2 atoms triatomic: a molecule made of 3 atoms polyatomic: a molecule made of multiple atoms Modern DeFnitions and Terms H H O O P P P P diatomic tetraatomic diatomic All of these are polyatomic 3 States of Matter Three classiFcations Solid Liquid Gas Characterized by: Rigidity (ability to retain shape) Expandability Compressibility 4 Model of a Solid at the Atomic Level 5 Model of a Solid at the Atomic Level 6 States of Matter: Solids Rigid and have deFnite shape Volume does not change much with changes in temperature and pressure Individual particles may have deFnite positions relative to one another strength of interactions between particles determines hardness and strength 7 Model of a Liquid at the Atomic Level 8 Model of a Liquid at the Atomic...
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