
Основания * -8
Authored by Сергей Мизин
Chemistry
8th Grade
Used 2+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Щелочи - это:
нерастворимые в воде оксиды
нерастворимые в воде основания
растворимые в воде оксиды
растворимые в воде основания
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Выберите формулу гидроксид-иона:
OH-
OH+
OH
O2-
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
В присутствии щелочей фенолфталеин изменяет свою окраску на:
фиолетовую
красную
желтую
малиновую
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Основания - это соединения:
атомов металлов и ОН группы
металлов с кислородом
неметаллов с кислородом
неметаллов и ОН группы
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Выберите формулу основания из предложенных формул :
СaO
Ca(OH)2
SO2
H2S
6.
MULTIPLE SELECT QUESTION
3 mins • 1 pt
Выберите формулы щелочей из предложенных формул:
Al(OH)3
NaOH
Fe(OH)2
KOH
7.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
Как называются вещества, изменяющие свой цвет в растворах щелочей?
Напишите название веществ во множественном числе и в именительном падеже.
С большой буквы.
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