Визначити молярну масу NaOH
Валентность
7th - 8th Grade
•12 Qs
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Валентность
Quiz
•
Chemistry
•
7th - 8th Grade
•
Medium
Bohdan Zavydovskyi
Used 95+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
25
30
40
45
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Визначити масову частку цукру в розчині, який містить 200гю води і 50г. цукру
15%
20%
20г
15г.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Химия изучает...
химические свойства
химические реакции
вещества,их строение,свойства и превращения
строение атома
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Сколько атомов входит в состав молекулы воды?
один
два
три
в состав молекулы входят не атомы,а ядра атомов
5.
MULTIPLE CHOICE QUESTION
10 sec • 1 pt
Укажите оксид:
H2SO4
CaO
ZnCl2
KOH
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентность II всегда у
Н
О
N
P
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентность I всегда у
Н
О
N
P
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