Modèle et molécule
Authored by Prof Sciences
Biology
1st Grade
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Complète la phrase :
La matière est constituée de ....
Particules visibles
Particules invisibles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le terme définis ?
phénomène physique au cours duquel une substance se disloque en toutes petites particules afin de créer un mélange dont la coloration est uniforme
La dissolution
La dilution
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le terme définis ?
phénomène physique qui consiste à diminuer la concentration d'un mélange en rajoutant par exemple de l'eau afin que la coloration soit moins intense
La dissolution
La dilution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La couleur est dite uniforme quand l'intensité est identique dans tout le récipient.
Vrai
Faux
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
25 ml d'eau et 25 ml de méthanol donne un mélange de 50 ml
Vrai
Faux
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour une matière, les molécules sont identiques
Vrai
Faux
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Les molécules d'un solide sont compressibles.
Vrai
Faux
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