
les mélanges et techniques de séparation
Authored by Yacine GUERMAT
Science
1st Grade
Used 103+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quelle technique de séparation des mélanges me permet de récupérer la substance qui s'évapore?
Vaporisation
Distillation
Sédimentation
Filtration
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Quelle méthode nécessite un papier-filtre pour séparer les mélanges?
Évaporation
Filtration
Décantation
Tamisage
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cette technique consiste à faire chauffer un mélange jusqu'à ébullition afin de récupérer les gaz.
Centrifugation
Distillation
Tamisage
Décantation
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Après m'être baigné dans la mer, je vois du sel sur ma peau asséchée. L'eau s'est évaporée. De quelle technique parle-t-on ici?
Centrifugation
Distillation
Évaporation
Tamisage
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Observe bien l'image. Quelle est cette technique de séparation des mélanges pour produire du sirop d'érable (on élimine l'eau dans la sève d'érable) ?
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Le jus d'orange pressé est-il ...
un corps pur ?
un mélange homogène ?
un mélange hétérogène ?
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
L'air est-il...
un corps pur ?
un mélange homogène ?
un mélange hétérogène ?
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