Recapitulare
Authored by Maria Bora
Chemistry
8th Grade
Used 4+ times
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In atmosfera umeda, fierul se acopera cu un strat protector de rugina.
Adevarat
Fals
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Argintul reactioneaza cu HCl formand clorura de argint si
Adevarat
Fals
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Cuprul este un metal ductil si foarte putin reactiv.
Adevarat
Fals
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Aurul reactioneaza cu apa.
Adevarat
Fals
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pe cuiul de fier se depune un strat roscat de cupru metalic, iar solutia se decoloreaza.
Scrieti reactia chimica pe baza acestui enunt.
a)
b)
c)
d)
6.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
Completeaza spatiile libere pentru a obtine enunturi adevarate:
Magneziul reactioneaza cu apa doar la incalzire, deci este mai putin (a) decat sodiul.
7.
FILL IN THE BLANKS QUESTION
30 sec • 1 pt
Completeaza spatiile libere pentru a obtine enunturi adevarate:
Sodiul si potasiul se afla in tabelul periodic in grupa (a) .
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