
Valencije atoma
Authored by Ana Stazic
Chemistry
7th Grade
Used 125+ times

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12 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
- Slika prikazuje model molekule vode. Jedan atom kisika povezan je s DVA atoma vodika. Atom kisika je
jednovalentan
dvovalentan
trovalentan
četverovalentan
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Slika prikazuje model molekule amonijaka. Molekule te tvari građene su od atoma dušika (plava boja) i atoma vodika (bijela boja). Koju valenciju ima dušik u ovom spoju?
jednovalentan
dvovalentan
trovalentan
četverovalentan
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Na slici je model molekule metana. Ta tvar je građena od ugljika i vodika. Promotri građu te molekule te pomoću slike odredi koja je valencija ugljika u tom spoju?
jednovalentan
dvovalentan
trovalentan
četverovalentan
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Sve molekule koje su na slici sadrže vodik. Vodik je u svim spojevima
jednovalentan
dvovalentan
trovalentan
četverovalentan
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Da bi sastavili kemijske formule spojeva moramo znati valencije. Neki atomi imaju uvijek istu valenciju - tablica na slici. Kemijske formule su točne kada su valencije atoma jednake. Potraži valencije na slici i odredi koja je formula za spoj natrijev klorid
NaCl
Na2Cl
NaCl2
Na2Cl2
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Uz pomoć valencija na slici odredi koja je točna formula spoja koji nazivamo kalcijev oksid
CaO
Ca2O
CaO2
Ca2O2
7.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Kemijska formula spoja cinkov oksid je
ZnO
Zn2O
ZnO2
Zn2O2
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