Formule chimice

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44 successes

English

Acest test este destinat elevilor de clasa a VII-a care doresc să-şi verifice cunoştinţele legate de scrierea corectă a formulelor chimice

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Question 1 of 10

1. Question
1 points
Referitor la substanţa $H_{2} O$ este adevărată afirmaţia:
- Este substanţă simplă
- Este formată din metale şi nemetale
- Este formată din 3 atomi
- Este compus ionic
Correct

Incorrect
Question 2 of 10

2. Question
1 points
Compusul: $K_{2} {CO}_{3}$ se numeşte:
- Carbonat de potasiu
- Tricarbonat de azot
- Tricarbonat de kaliu
- Carbonat de sodiu
Correct

Incorrect
Question 3 of 10

3. Question
1 points
Formula chimică a hidroxidului de magneziu este:
- ${Mg}_{2} OH$
- $M ({OH}_{2})$
- $Mg {(OH)}_{2}$
- ${HOMg}_{2}$
Correct

Incorrect
Question 4 of 10

4. Question
1 points
Substanţa compusă formată din clor şi zinc are formula chimică:
- ${ZCl}_{1}$
- ${ZnCl}_{2}$
- ${Cl}_{2} {Zn}_{1}$
- ${Zn}_{2} Cl$
Correct

Incorrect
Question 5 of 10

5. Question
1 points
Formula chimică a oxidului de aluminiu este:
- ${Al}_{3} O_{2}$
- $O_{2} {Al}_{3}$
- $AlO$
- ${Al}_{2} O_{3}$
Correct

Incorrect
Question 6 of 10

6. Question
1 points
Notarea corectă a moleculei de oxigen este:
- $O$
- $O_{2}$
- $2 O$
- $O_{3}$
Correct

Incorrect
Question 7 of 10

7. Question
1 points
Notaţia: $2 H_{2} {SO}_{4}$ conţine:
- 2 ioni
- 2 atomi de hidrogen
- 8 atomi de oxigen
- 1 atom de sulf
Correct

Incorrect
Question 8 of 10

8. Question
1 points
Are denumirea tehnică de metan compusul:
- ${NH}_{3}$
- ${CH}_{4}$
- ${NH}_{4}$
- ${CH}_{3}$
Correct

Incorrect
Question 9 of 10

9. Question
1 points
Formula chimică a acudului azotic este:
- $H_{2} {NO}_{2}$
- ${HNO}_{2}$
- $H_{2} {NO}_{3}$
- ${HNO}_{3}$
Correct

Incorrect
Question 10 of 10

10. Question
1 points
Compusul: ${CO}_{2}$ se numeşte:
- Dioxid de carbon
- Carbonat
- Oxid de calciu
- Oxid de carbon
Correct

Incorrect

Examples of questions from "Formule chimice"

Referitor la substanţa $H_{2} O$ este adevărată afirmaţia:
Notarea corectă a moleculei de oxigen este:
Formula chimică a oxidului de aluminiu este:

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