
Acizi si baze
Authored by Elena Sunca
Chemistry
1st Grade
Used 9+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Acizii sunt substanțe compuse care au în compoziția lor :
atomi de metale și oxigen
atomi de nemetale
atomi de hidrogen și atomi ai altor nemetale
atomi de hidrogen și un radical acid
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
După compoziția lor acizii se pot clasifica în :
Nu se pot clasifica
acizi monoacizi , poliacizi
hidracizi și oxiacizi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Care este valoarea pentru un pH neutru:
3
14
9
7
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Formula generală pentru baze este:
CnH2n+2
MOH
M(OH)n
Nici una nu este corectă
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
În paharul din imagine a fost adăugat un indicator în soluția unei baze. Ce indicator s-a adăugat?
metiloranj
fenolftaleină
nu s-a adăugat indicator
turnesol
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
După solubilitatea lor în apă, în câte categorii se pot clasifica bazele?
3
4
2
9
7.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
pH-ul mai mic de 7, ce mediu ne indică?
acid
neutru
bazic
nu este corectă nici o variantă
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