
Evaluare CFC, nr. 4
Authored by Violeta Barnaciuc
Chemistry
1st Grade
Used 2+ times

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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Selectaţi răspunsul prin bifare:
Părintele chimiei coloidale este considerat savantul englez Graham.
A
F
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Selectaţi răspunsurile prin bifare:
Thomas Graham clasifică substanţele în:
cristaline;
coloidale;
amorfe;
gazoase;
lichide.
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Completați spațiile libere cu informația adecvată:
Sistemele neomogene ce constau dintr-un amestec de două sau mai multe substanțe se numesc ...
necoloidale;
disperse;
soluții moleculare;
soluții adevărate.
4.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Completați spațiile libere cu informația adecvată:
Faza dispersată discontinuă a sistemelor disperse este numită ...
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selectaţi răspunsul prin bifare:
O substanţă se află în stare coloidală dacă particulele componente au cel puţin o dimensiune cuprinsă între 10-9m -10-6m.
A
F
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Selectaţi răspunsurile prin bifare:
În funcţie de dimensiunea particulelor fazei dispersate deosebim următoarele tipuri de sisteme disperse:
moleculare;
emulsii;
aerosoluri;
suspensii;
disperse.
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Selectaţi răspunsul prin bifare:
Suspensiile sunt sisteme coloidale de tipul:
L/S;
S/L;
L/L;
S/S.
.
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