
Chapitre 2
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Science
11th Grade
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est la formule chimique de l'ion représenté par l'atome : Mg
Mg+
Mg2+
Mg3+
Mg0
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelles est la formule de la concentration massique
C=m/v
C=m*v
C=m/v^2
C=m+v
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
H2Se est un(e)
acide
base
sel
neutral
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le pH d'une substance neutre
5 (changement des couleurs du papier de tournesol)
6 (légère acidité, changement des couleurs du papier de tournesol)
7 (aucun changement des couleurs du papier de tournesol)
8 (légère basicité, changement des couleurs du papier de tournesol)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Une canette de 350 ml de coke renferme 5 grammes de sucre. Quelle est sa concentration massique (g/L) ?
10 g/L
14,3 g/L
20 g/L
5 g/L
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est la formule chimique de l'ion représenté par l'atome : Te
Te+
Te2-
Te-
Te3-
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ma formule chimique est composé d'un métal et d'un non-métal.
Sel
Eau
Acide
Alcool
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