
4e - Transformation chimique
Authored by Estelle Rivero
Science, Chemistry
7th Grade
Used 111+ times

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21 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Les substances présentes au début de la réaction chimique et qui disparaissent sont les ____________
Produits
Réactifs
Atomes
Substances
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Les substances qui se forment lors de la transformation chimique sont les ___________
Produits
Réactifs
Substances
Élements
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quel chiffre retrouvera-t-on sur la balance après la réaction chimique
154 g
Plus que 154 g
Moins que 154 g
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Comment appelle-t-on ce qui avant la flèche ?
les gauchers
les réactifs
les produits
on ne les appelle pas.
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
La molécule de méthane CH4 est composée:
4 atomes de carbone et 1 atome d’hydrogène.
1 atomes de carbone et 4 atomes d’hydrogène.
4 atomes de carbone et 4 atomes d’hydrogène.
1 atome de carbone et 1 atome d’hydrogène.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Quel élément manque à la place des "???" ?
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Comment s’appellent les espèces chimiques après la flèche?
les réactifs
les droitiers
les produits
on ne les appelle pas non plus
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