Металлы 1 группы
Authored by НАТАЛЬЯ ЛИТВИНОВА
Chemistry
9th Grade
Used 3+ times
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14 questions
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1.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Сколько электронов на последнем уровне имею щелочные металлы ?
Вписать ТОЛЬКО цифру !
2.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Какое название имеет формула следующего вещества - NaHCO3
Выбрать ВСЕ названия
питьевая сода
каустическая сода
гидрокарбонат натрия
едкий натр
кристаллическая сода
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Соли калия окрашивают пламя в жёлтый цвет.
правда
ложь
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Соли натрия окрашивают пламя в фиолетовой цвет
правда
ложь
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Какое уравнение верно ?
К + О2= КО2
К + О2= К 2О
К + О2= К2О2
все ответы правильные
нет правильных ответов
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Какое уравнение верно ?
Na + O2 = Na2O2
Na + O2 = Na2O
Na + O2 = NaO2
нет правильных ответов
все ответы правильные
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Какое уравнение верно?
Li + O2 = Li2O
Li + O2 = Li2O2
Li + O2 = LiO2
нет правильных ответов
все ответы верные
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