
FERRUM
Authored by Marina Komarova
Chemistry
9th Grade
Used 5+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Электронная формула атома железа
3d6 4s1
3d5 4s2
3d6 4s2
3d8 4s3
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Степени окисления железа в соединениях
+2
+3
+1
+2 +3
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Железо
серебристо - белый металл
имеет магнитные свойства
не растворяется в кислотах
не окисляется
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
сумма коэффициентов уравнения Fe + O2 -> Fe3O4 равна
4
5
6
7
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Сумма коэффициентов уравнения Fe + HNO3(оч.разб.) -> Fe(NO3)2 + N2 + H2O равна
28
29
30
31
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
положительно заряженный ион называется
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