cl.8 Clasele de substanțe anorganice
Authored by Viorica Bludaru
Chemistry
Professional Development
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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
substanțe care își schimbă culoarea sub influența mediului...
acizi
baze
indicatori
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
HR este formula generală pentru...
acizi
baze
săruri
oxizi
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Culoarea fenolftaleinei în mediul bazic este
roșu
albastru
roz zmeuriu
galben
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Zn+2HCl=...
ZnCl2+2H2
2ZnCl2+H2
ZnCl2+H2
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Oxizii bazici pot interacționa cu...
oxizii acizi, oxizii bazici
oxizii acizi, acizii
oxizii bazici, acizii
oxizii acizi, sărurile
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Descompunerea calcarului...
CaCO3=Ca+CO3
CaCO3=CaO+CO2
CaCO3=CaO2+CO
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Formula acidului clorhidric...
H2Cl
HCl
CH4
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