
Cheminiai elementai
Authored by Oksana Gončarova
Chemistry
8th Grade
Used 32+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuris iš šių metalų yra šarminis metalas?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kiek valentinių elektronų yra IIA grupės elementų atomuose?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kas bendra trečiojo periodo elementų atomų sandarai?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kurio elemento atomo sandarą vaizduoja ši schema?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Chlorido jonas skiriasi nuo chloro atomo, nes
turi daugiau protonų
turi daugiau elektronų
turi mažiau protonų
turi mažiau elektronų
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kuris iš šių elementų gali virsti neigiamu jonu?
siera
natris
geležis
baris
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Kuri formulė yra diazoto monoksido?
N2O5
NO
NO2
N2O
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