Recapitulare 2 - reactii de combinare, probleme
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Hard
Manuela Donici
Used 18+ times
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10 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Denumirea substantei compuse CO2 este:
monoxid de monocarbon
dioxid de carbon
monoxid de dicarbon
oxid de calciu
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Denumirea substantei compuse H2CO3 este:
acid carbonic
hidroxid de carbon
hidroxid de calciu
carbonat de hidrogen
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Sunt ecuatii ale reactiilor de combinare:
CO2 + H2O ↔ H2CO3
2 Al + Fe2O3 =2 Fe + Al2O3
H2CO3 ↔ H2O + CO2
4 Al + 3 O2 = 2 Al2O3
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Sirul in care apar doar substante compuse din categoria OXIZI este:
O2, FeO, FeS, CuO
O2, O3, H2O, CO
H2O, CO, SO2, CaO
SO2, SO3, O2, FeO
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Sunt toti ACIZI in sirul:
H2O, FeO, Fe(OH)2, FeCl2
CO, CO2, SO2, H2O
H2O, HCl, Na2O, H2S
HCl, H2CO3, H2S, H2SO4
6.
MULTIPLE SELECT QUESTION
1 min • 1 pt
Oxizii au urmatoarele caracteristici:
sunt compusi binari sau ternari ce contin hidrogen
sunt substante compuse binare ce contin oxigen
pot sa fie oxizi de metale sau de nemetale
formula lor chimica incepe cu hidrogen
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Despre compusul H2O, apa, sunt adevarate afirmatiile:
este un acid
este un oxid
este o substanta simpla
este o substanta compusa
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