L'AIGUA
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
Silvia Arnau
FREE Resource
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10 questions
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1.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
La massa del gas hidrogen és?
1 g/mol
2 g/mol
1 uma
2uma
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quants electrons de valència necessita l'oxigen?
+1é
-4é
-2é
+2é
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quina forma té la molécula d'aigua?
linial
cúbica
hexagonal
tetraédrica
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Per què considerem l'aigua un disolvent universal?
Perquè disol totes les substàncies polars i apolars
Quimicament, perquè disol gran quantitat de substàncies en la natura pel seu poder anfòter
Biologicament, perquè és la molécula en forma de fluid més abundant en la natura
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gràcies a quina propietat l'aigua no és un gas?
Per les Forces de Van der Waals
Per tindre una massa molar petita
Pels ponts d'hidrogen entre molécules
Pel seu punt d'evaporació
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'aigua disol molécules polars, indica quines son:
sal comú
vaselina
oli
greix
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Marca els métodes obtenció d'aigua per consum humà i animal:
Osmosis
Ebullició
Recol·lecció de la plutja
Derretir neu
Obtenció per un pou d'un aqüífer
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