
ХИМИЯ 7 КЛАСС
Authored by Bohdan Zavydovskyi
Chemistry
7th Grade
NGSS covered
Used 210+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Никель широко используется в промышленности для изготовления нержавеющей стали .Никелевые покрытия защищают металл от коррозии. Укажите символ химического элемента никеля:
N
Nb
Na
Ni
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Карбонат кальция CaCO3 встречается в природе в составе мела, известняка ,мрамора. Укажите молярную массу карбоната кальция:
40
44
100
136
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентність Са?
1
2
3
4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Валентність Nа?
1
2
3
4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Атомна маса СL?
24
33
35.5
17
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Визначити молярну масу NaOH
25
30
40
45
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Химия изучает...
химические свойства
химические реакции
вещества,их строение,свойства и превращения
строение атома
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