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Texte dans la page d'accueil de Cours de Chimie
Cours de Chimie
Chimie
/ Résumé de Cours du Secondaire collège cap bep
état de la matière
atome
molécule
mole
réaction
chimique
équation
bilan
ions
pH
oxydo réduction
corrosion
des métaux
propane
butane
cycle cuivre
exercices chimie
or
rubis - saphir
emeraude
diamant
liens sponsorises Portable
Ce dossier doit vous permettre de revoir les notions de base de chimie
du secondaire.
Les différents états de la matière
Les trois états de la matière sont :
SOLIDE : état condensé et ordonné.
LIQUIDE : état condensé et désordonné.
GAZEUX : état non condensé et dispersé.
T°C de fusion de quelques corps simples :
Aluminium 660,3 °C, Argent 961,9 °C, Azote -210 °C, Cuivre
1084,5°C, Eau 0 °C, Etain 231,96 °C, Fer 1535 °C, Mercure
-38,86 °C, Or 1064,4 °C, Oxygène -218,8 °C, Plomb
327,5 °C, Zinc 419,58 °C.
T°C d’ébullition de quelques corps simples :
Aluminium 2060 °C, Argent 1927 °C, Azote -195,8 °C, Cuivre
2336 °C, Eau 100 °C, Etain 2260 °C, Fer 3000 °C, Mercure
356,6 °C, Or 2600 °C, Oxygène -182,96 °C, Plomb 1620
°C, Zinc 907 °C.
Les changements d’états de la matière :
L’ébullition est le passage de l’état LIQUIDE
à l’état GAZEUX.
La fusion est le passage de l’état SOLIDE à l’état
LIQUIDE.
La liquéfaction est le passage de l’état GAZEUX
à l’état LIQUIDE.
La vaporisation est le passage de l’état LIQUIDE à
l’état GAZEUX.
La solidification est le passage de l’état LIQUIDE à
l’état SOLIDE.
La condensation est le passage de l’état GAZEUX à
l’état LIQUIDE.
La sublimation est un changement d’états très rare,
exemple la naphtaline ou les désodorisants solides qui passent
du SOLIDE au gaz sans passer par l’état LIQUIDE.
Changement d' états et constant physique.
A une pression donnée, la température de fusion ou de
solidification, d' un corps pur est constante.
A une pression donnée, la température d' ébullition
d' un corps pur est constante. A l' ébullition, il se forme des
bulles de vapeurs au sein de l' eau liquide.
- Copyright 2007 - résumé de chimie - Tous droits
réserves. - Benchmark
- résumé de cours de chimie - tableau amortissement
Les liens dans Cours de Chimie
http://www.resume-de-chimie.zwebfr.com
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http://www.tableauamortissement.eu/
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