
Separarea substanțelor din amestecuri
Authored by NICULAE ANCA
Chemistry
7th Grade
Used 11+ times

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Separarea componentelor amestecului de apă cu sare de bucătărie se face prin:
Topire
Sublimare
Cristalizare
Decantare
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La obținerea amestecului de apă cu zahăr are loc un fenomen de:
Dizolvare
Topire
Încălzire
Cristalizare
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Distilarea se bazează pe diferența între ...................... ale substanțelor din amestec.
solubilități
punctele de topire
densități
punctele de fierbere
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lichidul care trece prin hârtia de filtru și se colectează în alt vas se numește:
filtru
filtrat
cafea
ceai
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un amestec eterogen apă-ulei se poate separa cu ajutorul:
unui filtru
cilindrului gradat
balonului cotat
pâlniei de separare
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Prin cristalizare se pot separa componentele amestecului:
apă-alcool
benzină-ulei
apă-nisip
apă-sare
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nu este o metodă de separare a substanțelor din amestecuri:
dizolvarea
distilarea
decantarea
cristalizarea
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