Formule chimice – [3]

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Testul se adresează elevilor de clasa a VII-a care-și pot verifica cunoștințele despre formule chimice.

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Question 1 of 10

1. Question
1 points
În formula ${Na}_{2} {CO}_{3}$ , numărul total al atomilor este
- 3
- 6
- 4
- 5
Correct

Incorrect
Question 2 of 10

2. Question
1 points
Este un hidracid
- Trioxidul de sulf
- Acidul sulfhiric
- Acidul sulfuric
- Acidul sulfuros
Correct

Incorrect
Question 3 of 10

3. Question
1 points
Este oxiacid
- $HCl$
- ${NH}_{3}$
- ${NO}_{2}$
- ${HNO}_{3}$
Correct

Incorrect
Question 4 of 10

4. Question
1 points
Denumirea corectă a substanței cu formula $P_{2} O_{5}$ este
- Pentaoxid de fosfor
- Dioxid de potasiu
- Pentaoxid de difosfor
- Pentaoxid de potasiu
Correct

Incorrect
Question 5 of 10

5. Question
1 points
Este oxid nemetalic
- $K_{2} O$
- $MgO$
- $CaO$
- ${NO}_{2}$
Correct

Incorrect
Question 6 of 10

6. Question
1 points
Denumirea corectă a substanței cu formula ${Cu}_{2} O$ este
- Oxid de cupru (I)
- Oxid de cupru II
- Oxid de cupru
- Dioxid de cupru
Correct

Incorrect
Question 7 of 10

7. Question
1 points
Formula $H_{2} {CO}_{3}$ corespunde substanței
- Bicarbonat
- Coarbonat de hidrogen
- Trioxid de carbon
- Acid carbonic
Correct

Incorrect
Question 8 of 10

8. Question
1 points
În formula ${Mg}_{3} (PO$ ₄)2, numărul atomilor de oxigen este
- 6
- 8
- 4
- 9
Correct

Incorrect
Question 9 of 10

9. Question
1 points
Formula corectă a hidroxidului de Fe(III) este
- $FeOH$
- ${Fe}_{3} (OH)$
- $Fe {(OH)}_{3}$
- ${Fe}_{2} {(OH)}_{3}$
Correct

Incorrect
Question 10 of 10

10. Question
1 points
Formula acidului sulfuric este
- $H_{2} {SO}_{4}$
- ${SO}_{3}$
- $H_{2} S$
- $H_{2} {SO}_{3}$
Correct

Incorrect

Examples of questions from "Formule chimice – [3]"

Formula corectă a hidroxidului de Fe(III) este
În formula ${Mg}_{3} (PO$ ₄)2, numărul atomilor de oxigen este
În formula ${Na}_{2} {CO}_{3}$ , numărul total al atomilor este

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Formule chimice – [3]

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