Care dintre metale este cel mai reactiv ?
Caracter metalic
9th Grade
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Caracter metalic
Quiz
•
Chemistry
•
9th Grade
•
Hard
EMILIA PISTRIȚU
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13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Na
Zn
Cu
Ag
2.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Care dintre metale este mai reactiv decât aluminiu ?
Mg
Na
K
toate
3.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Care dintre metale reacționează cel mai ușor cu apa ?
Al
K
Mg
Na
4.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Metalele alcaline ( grupa IA) se păstrează sub petrol deoarece reacționează foarte ușor cu oxigenul din aer .
adevărat
fals
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Metalul cel mai puțin reactiv este ?
Ca
Fe
Mg
Cu
6.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
În grupă, caraterul metalic ...........de sus în jos
crește
scade
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Ecuația reacției dintre sodiu și apă este ?
2Na +2 H2O = NaOH + H2
Na +2 H2O = Na2O + H2
2Na +2 H2O = 2NaOH + H2
2Na +2 H2O = 2NaH2 + O2
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