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Chap 3-Les états solide, liquide et gazeux
La matière est tout ce qui existe physiquement .C'est ce que nous pouvons voir, toucher,
sentir....Dans la nature la matière existe principalement sur trois état physiques .L'état solide ,l'état liquide
et l'état gazeux.
I-L'etat solide
Exemples de solides: La glace; la cuillère ; le bois; le tableau; la farine sont des solides
Propriétés des solides
Les solides sont saisissables entre les doigts. Les solides compacts ont une forme propre et un
volume pratiquement invariables.
On distingue trois types de solides :des solides rigides(bloc de pierre);des solides mous(Chiffon) et des
solides pulvérisés.
Les solides pulvérisés prennent la forme du récipient qui les contient mais ;ils présentent une
surface bombée(leur Surface libre n'est ni plane et ni horizontale) après l'écoulement..
Exemple :le sable ;le riz et la farine sont des exemples de solides pulvérisés.
II_L'état liquide
Exemples des liquide:L'eau, l'huile, l'essence; le pétrole...
Propriétés des liquides
Les liquides sont insaisissables entre les doigts ce sont des fluides : Ils coulent et prennent la forme du
récipient qui les contient. Ils n'ont pas de forme propre, les liquides sont incompressibles.
La surface de l'eau en contact avec l'air s'appelle la surface libre, cette surface des liquides est plane et
horizontale au repos.
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
2
éé



êé



Dans la nature il y a une diversité de gaz, beaucoup sont incolores, inodore.
Exemples de gaz: les gaz sans odeurs : l'oxygène; l'azote; la vapeur d'eau ; les gaz avec une
forte odeur : Dioxyde de Soufre, l'ammoniac …et les gaz coloriés: le Chlore; le dioxyde de
carbone.

é
è
éè
é
ééé



èèà
èé
é
éé

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
3
  
        
        
        


 
 

 
é
è


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
êéé
éé
ê

é

é






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Chap1-Les trois ‚tats de la matiŠre.pdf

  • 1. 1 Chap 3-Les états solide, liquide et gazeux La matière est tout ce qui existe physiquement .C'est ce que nous pouvons voir, toucher, sentir....Dans la nature la matière existe principalement sur trois état physiques .L'état solide ,l'état liquide et l'état gazeux. I-L'etat solide Exemples de solides: La glace; la cuillère ; le bois; le tableau; la farine sont des solides Propriétés des solides Les solides sont saisissables entre les doigts. Les solides compacts ont une forme propre et un volume pratiquement invariables. On distingue trois types de solides :des solides rigides(bloc de pierre);des solides mous(Chiffon) et des solides pulvérisés. Les solides pulvérisés prennent la forme du récipient qui les contient mais ;ils présentent une surface bombée(leur Surface libre n'est ni plane et ni horizontale) après l'écoulement.. Exemple :le sable ;le riz et la farine sont des exemples de solides pulvérisés. II_L'état liquide Exemples des liquide:L'eau, l'huile, l'essence; le pétrole... Propriétés des liquides Les liquides sont insaisissables entre les doigts ce sont des fluides : Ils coulent et prennent la forme du récipient qui les contient. Ils n'ont pas de forme propre, les liquides sont incompressibles. La surface de l'eau en contact avec l'air s'appelle la surface libre, cette surface des liquides est plane et horizontale au repos.  
  • 2. 2 éé    êé    Dans la nature il y a une diversité de gaz, beaucoup sont incolores, inodore. Exemples de gaz: les gaz sans odeurs : l'oxygène; l'azote; la vapeur d'eau ; les gaz avec une forte odeur : Dioxyde de Soufre, l'ammoniac …et les gaz coloriés: le Chlore; le dioxyde de carbone.  é è éè é ééé    èèà èé é éé    
  • 3. 3                                        é è     êéé éé ê  é  é     