
KEMIJA
Quiz
•
Chemistry
•
1st Grade
•
Medium

Jana Nesuda
Used 9+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Koji od navedenih atoma ima najveću energiju ionizacije?
atom H
atom He
atom Na
atom Cl
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Ako u pojedinoj grupi PSE raste atomski radijus tada:
raste energija ionizacije
raste privlačna sila između jezgre i elektrona
opada energija ionizacije
raste elektronski afinitet
atom teže otpušta elektron
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Razlika u elektronegativnosti između alkalijskih metala i vodika dovoljna je da njihova veza:
ima ionski karakter
ima djelomično ionski karakter
ima djelomično kovalentni karakter
ima karakter vodikove veze
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Količinska koncentracija je dana omjerom:
mase otopljene tvari i količine otopine
mase otopljene tvari i volumena otopine
količine otopljene tvari i mase otopine
količine otopljene tvari i volumena otopine
količine otopljene tvari i volumena otapala
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Uzorak urina sadrži 0,185 mol klorid iona Cl- u 1,00 L. Ako pretpostavimo da sav klorid u urinu potječe od NaCl izračunajte masu NaCl u 750,00 mL urina.
0,811 kg
8,11 g
0,811 g
81,1 g
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Za kovalentnu vezu točno je sve OSIM:
prema klasičnoj Lewisovoj teoriji kovalentna veza nastaje iz nastojanja atoma da međusobno povezani postignu stabilniju elektronsku konfiguraciju
kovalentna veza nastaje stvaranjem jednog ili više zajedničkih elektronskih parova.
zajednički elektronski par pripada elektronegativnijem atomu
crtica valencije u kemijskoj formuli uvijek znači zajednički elektronski par
kovalentna veza nastaje vezivanjem nemetala
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Izračunajte maseni udio natrijevog klorida u postotcima u otopini koja sadrži 2,28 g natrijevog klorida u 247,72 g vode.
0,912
9,12
91,2
0,091
18,240
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