Document 3 : Solutions, Énergie, aliments et propriétés
Quiz
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Science
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9th Grade
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Practice Problem
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Sabrina Silva
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelle formule est isolée adéquatement pour permettre de calculer la masse d'un soluté?
m=v/c
m=c/v
m=cv
m=c+v
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calcul: quel est le volume d'une solution de 10 g/L élaborée à partir de 5g de soluté?
0,5 L
2 L
50 L
200 ml
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour passer d'une concentration en g/L à une concentration en %m/V on doit...
multiplier par 10.
diviser par 10.
convertir les unités.
utiliser une formule.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dans la formule de la concentration, le v représente...
le volume de la solution.
le volume du soluté.
le volume du solvant.
le volume final.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
%V/V pour un soluté liquide correspond...
au volume de soluté dans 100 ml de solution.
au volume de soluté dans 100 ml de solvant.
à la masse de soluté dans 100 ml de solution.
au pourcentage de soluté dans le solvant.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lors de la dissolution, les particules de soluté...
fondent.
disparaissent.
entrent dans les particules de solvant.
se placent entre les particules de solvant.
se cachent derrière les particules de solvant.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quel est le nom du procédé suivant?
dissolution
suspension
précipitation
sursaturation
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