Железо и его соединения
Quiz
•
Chemistry
•
9th Grade
•
Practice Problem
•
Hard
Евгения Наумкина
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Элемент Fe располагается в ПСХЭ (период, группа, подгруппа)
III, III, Б
IV, VII, Б
IV, VII, А
IV, VIII, Б
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентность железа
II
III
переменная
постоянная
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Какие степени окисления характерны для железа:
+2
+1
+3
+5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Атому железа соответствует строение:
2е,8е.2е,
2е,8е,14е,2е
2е.8е.
2е,8е,3е.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Вещество с формулой Fe2O3 называется:
оксид железа(III)
оксид железа(II)
гидроксид железа(II)
гидроксид железа(III)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
ОТ какого фактора зависит возможная степень окисления железа в сложном веществе?
от желания атома железа иметь степень окисления +2 или +3
от природы того, кто окисляет атом железа
от желания школьника, составляющего уравнение реакции
от цен на железо на сырьевой бирже
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Железная окалина (Fe3O4) cодержит атомы железа в степенях окисления
+ 8/3
+2
+2,+3
+3
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