Основания
Quiz
•
Chemistry
•
8th Grade
•
Practice Problem
•
Medium
Снежана Мурзина
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
При попадании щелочи на руку необходимо
промыть струей воды из-под крана в течение 8 мин, далее промыть 2%-м раствором питьевой соды
промыть струей воды из-под крана в течение 8 мин, далее промыть 2%-м раствором уксусной кислоты
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Выберите формулу гидроксид-иона:
OH
OH-
OH+
O2-
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Щелочи - это:
растворимые в воде оксиды
нерастворимые в воде оксиды
растворимые в воде основания
нерастворимые в воде основания
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Назовите вещество Fe(OH)2:
гидроксид железа
гидроксид железа (III)
гидроксид железа (I)
гидроксид железа (II)
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Укажите формулу гидроксида алюминия:
Al(OH)3
Al(OH)2
Al2O3
AlOH
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Выберите ряд, в котором расположены только щелочи:
Fe(OH)2, Mg(OH)2, KOH
NaOH, KOH, Ba(OH)2
Ca(OH)2, Zn(OH)2, NaOH
LiOH, Cu(OH)2, Ba(OH)2
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
В присутствии щелочей фенолфталеин изменяет свою окраску на:
желтую
фиолетовую
красную
малиновую
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