Transformations physiques
Quiz
•
Science
•
10th - 12th Grade
•
Practice Problem
•
Medium
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'équation modélisant un changement d'état est :
espèce(s, l ou g) → espèce(aq)
espèce(état 1) → espèce(état 2)
espèce(état 1) ← espèce(état 2)
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsque du sel est introduit dans l'eau de cuisson des pâtes, il :
fond.
se dissout.
est dilué.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsqu'un fil d'étain devient liquide au contact du fer à souder, il :
fond.
se dissout.
se liquéfie.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsqu'un corps absorbe de l'énergie, sans changer d'état, l'agitation thermique :
ne varie pas.
augmente.
diminue.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsqu'un corps absorbe de l'énergie thermique du milieu extérieur pour changer d'état, le changement d'état est :
endothermique.
exothermique.
athermique.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Par convention, l'énergie Q associée à une transformation exothermique est :
positive.
négative.
nulle.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'énergie massique de changement d'état s'exprime en :
J.
J⋅kg-1.
J⋅kg.
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