Викторина по щелочным металлам: натрий и калий
9th Grade
•15 Qs
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Викторина по щелочным металлам: натрий и калий
Quiz
•
Chemistry
•
9th Grade
•
Medium
Гульнара Байсалова
Used 6+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой элемент является основным представителем щелочных металлов?
Кальций
Магний
Железо
Натрий
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой атомный номер у натрия?
10
12
19
11
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой цвет имеет натрий?
Красный
Синий
Зеленый
Серебристо-белый
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой элемент мягче натрия?
Литий
Калий
Магний
Кальций
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Что образуется при реакции натрия с водой?
Гидроксид натрия
Соль
Металл
Кислота
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какой атомный номер у калия?
18
19
21
20
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какое свойство характерно для щелочных металлов?
Мягкость
Высокая плотность
Твердость
Низкая реакционная способность
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