
Валентност
Authored by Татяна Николова
Chemistry
7th Grade
Used 35+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Свойство на атомите на даден химичен елемент да се свързват с точно определен брой други атоми се нарича
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Водородът проявява винаги:
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Кислородът се свързва с две химични връзки. Коя валентност е той?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Означенията на простите вещества и на химичните съединения с химични знаци се наричат
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Молекулната формула показва:
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Какви са показаните формули?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Означаването на химичните реакции с химични знаци и формули се нарича:
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