technique de séparations
Quiz
•
Science
•
1st Grade
•
Practice Problem
•
Hard
Carole Czerwonogora
Used 13+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Comment s’y prendre pour séparer de l’huile de moteur (pleine de sable) d’une voiture qui a roulé dans le désert ?
évaporation
décantation
Filtration
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Comment s’y prendre pour séparer un mélange homogène d’eau gazeuse et d’alcool ?
impossible
ØRécupérer le gaz en agitant le mélange ;
Øévaporer de l’alcool.
ØRécupérer le gaz en agitant le mélange ;
ØDistillation de l’alcool.
décanter le liquide
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
L'eau minérale est un corps pur
Vrai
Faux
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Le lait est un mélange
homogène
hétérogène
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
La température de fusion du cyclohexane est de 6°C.
A la température de 10°C, le cyclohexane est :
solide
liquide
gazeux
gelé
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
la sublimation est le passage de
liquide à solide
liquide à liquide
solide à gazeux
gazeux à solide
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pour identifier la composition d'un objet, on peut :
le peser
calculer sa masse volumique
évaluer son volume
le filtrer
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