
Amestecuri. Dizolvarea. Separarea
Authored by Gabriela Raicu
Science
4th Grade
Used 7+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Combinând două sau mai multe substanțe obținem:
o soluție
un amestec
o dizolvare
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Corpurile care se amestecă în mod uniform cu apa sunt:
solubile
insolubile
dizolvante
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sunt corpuri insolubile în apă:
nisip, sare, lapte
zahăr, pietriș, sirop
nisip, orez, ulei
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Formează un amestec omogen:
apă și ulei
apă și miere
apă și nisip
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Cel mai bun dizolvant este:
apa
laptele
sucul
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Factorii care influențează dizolvarea sunt:
gradul de agitare, lumina, răcirea
căldura, frigul, lumina
temperatura, gradul de agitare, gradul de sfărâmare
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Componentele amestecurilor neomogene se pot separa prin:
amestecare și dizolvare
filtrare și decantare
omogenizare și cristalizare
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