Le dioxygène est un

2éme collège

Quiz
•
Physics
•
6th - 8th Grade
•
Medium
ETTALIBI MERIEM
Used 1+ times
FREE Resource
21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
atome
une molécule.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La formule d’une molécule d’eau est
2HO
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Au cours d'une combustion, le dioxygène est:
Le combustible.
Le comburant.
L’air.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L’eau du chaux montre l’existence de
Le dioxyde de carbone.
Le butane.
Le carbone.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L’air qui constitue l’atmosphère est un
Corps pur
mélange
corps pur composé
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Toutes les combustions sont des transformations chimiques
FAUX
VRAI
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une combustion incomplète se produit quand la quantité du dioxygène est suffisante
VRAI
FAUX
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