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Questions divers

Authored by Emmanuelle Buelens

Chemistry

1st Grade

Used 1+ times

Questions divers
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10 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Quelle équation est correctement équilibrée?

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2.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

La valence de l'atome d'azote est

I

II

III

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

L'ion magnésium a pour formule:

Mg+

Mg2-

Mg2+

Mg-

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Quelle est la bonne formule moléculaire?

NaCl2

Na2Cl

NaCl

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Choisis la bonne formule pour calculer la concentration massique.

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quel modèle de Bohr correspond à la structure électronique de l'ion béryllium?

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7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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Cet icône de sécurité signifie:

Explosif

Inflammable

Gaz sous pression

Comburant

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