Какое место занимает химический элемент Si в земной коре?

9В СОР за 3 четверть

Quiz
•
Chemistry
•
8th Grade
•
Medium
Мөлдір Арыстанбекқызы
Used 2+ times
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19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1
2
3
4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Как получить аморфный кремний?
SiO2+CaO
SiO2+C
SiO2+NaOH
SiO2+Mg
3.
OPEN ENDED QUESTION
3 mins • 1 pt
Приведите примеры для минералов кремния
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4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Выбрать аллотропные модификации кремния
Силицид
Графит
Аморфный
Кристаллический
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Степень окисления кремния в продукте реакции взаимодействия кремния с магнием
0
-4
+4
+2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Укажите число валентных электронов в основном состоянии атома серы
2
4
6
8
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Укажите возможные степени окисления серы
+2
+1
+4
+6
+5
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