
Završni ispit 3
Authored by Danijela Gligorić
Chemistry
1st - 3rd Grade
Used 14+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jonska veza se formira između sledeći elemenata:
metala i metala
metala i nemetala
nemetala i plemenitih gasova
plemenitih gasova i metaloida
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Za uklanjanje masne mrlje sa neke tkanine najbolje je upotrebiti:
tečnu smešu alkana
vodeni rastvor sirćetne kiseline
koncentrovanu sumpornu kiselinu
70%-ni rastvor etanola
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Pronađi jone:
H, N, Ag, O
H+, Ag+
N3-, O2-
N2, O2, H2O
4.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Homogene smeše nazivaju se
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Za kalcijuma važe sledeća tvrđenja:
to je nemetal
to je metal
lako reaguje sa vodom
ne reaguje sa vodom
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Kako treba označiti jone nastale kada dva atoma elementa A predaju po jedan elektron atomu elementa B.
2A+ i 2B-
2A+ i B2-
A2- i 2B+
2A- i B2+
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Koje od datih tvrdnji se odnose na kiseline?
Imaju pH niže od 7
Imaju pH iznad 7
Menjaju boju crvenog lakmus papira u plavo
Menjaju boju plavog lakmusa u crveno
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