
n et transformation physiques
Authored by Stephane Tetart
Chemistry, Physics
10th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Le nombre 6,02 x 1023 correspond
à la constante d'Avogadro
au nombre d'entités dans une mole de matière
à la quantité de matière dans un litre d'eau
à la masse d'une molécule d'eau
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'unité de mesure de quantité de matière est
la mole
le kilogramme par mètre cube
le gramme par mol
sans unité
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La masse de l'atome d'oxygène est m(O)= 2,67x10-26kg celle du carbone m(C)= 2,00x10-26kg. Donc la masse du CO2 vaut
7,34 x 10 -26 kg
6,67 x 10 -26 kg
4,67 x 10 -26 kg
on ne peut pas la calculer
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsque la vapeur d'eau se transforme en pluie, le changement d'état de l'eau est appelé
liquéfaction
fusion
condensation
solidification
5.
FILL IN THE BLANK QUESTION
45 sec • 1 pt
Le passage de l'état liquide à l'état gazeux se nomme
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le sel qu'on trouve dans l'eau de mer s'y trouve après
fusion
dissolution
dilution
liquéfaction
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
La solidification est une transformation
endothermique
exothermique
qui libère de l'énergie
qui capte de l'énergie
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