by xwhite
Balancing chemical equations is a fundamental skill in chemistry that ensures the conservation of mass in chemical reactions. This quiz will challenge your understanding and application of this essential concept through a series of carefully crafted questions. Sharpen your pencil and get ready to balance those equations!
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Balancing Chemical Equations Quiz Questions Overview
1. What is the balanced equation for the reaction between hydrogen (H₂) and oxygen (O₂) to form water (H₂O)?
H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
H₂ + 2O₂ → H₂O
2H₂ + 2O₂ → 2H₂O
2. Which of the following is the balanced equation for the combustion of methane (CH₄)?
CH₄ + O₂ → CO₂ + H₂O
CH₄ + 2O₂ → CO₂ + 2H₂O
2CH₄ + O₂ → 2CO₂ + 2H₂O
CH₄ + 3O₂ → CO₂ + 2H₂O
3. What is the balanced equation for the reaction between sodium (Na) and chlorine (Cl₂) to form sodium chloride (NaCl)?
Na + Cl₂ → NaCl
2Na + Cl₂ → 2NaCl
Na + 2Cl₂ → NaCl
2Na + 2Cl₂ → 2NaCl
4. Which of the following is the balanced equation for the decomposition of potassium chlorate (KClO₃)?
KClO₃ → KCl + O₂
2KClO₃ → 2KCl + O₂
2KClO₃ → 2KCl + 3O₂
KClO₃ → KCl + 3O₂
5. What is the balanced equation for the reaction between aluminum (Al) and oxygen (O₂) to form aluminum oxide (Al₂O₃)?
Al + O₂ → Al₂O₃
4Al + 3O₂ → 2Al₂O₃
2Al + 3O₂ → Al₂O₃
4Al + O₂ → 2Al₂O₃
6. Which of the following is the balanced equation for the reaction between iron (Fe) and sulfur (S) to form iron(II) sulfide (FeS)?
Fe + S → FeS
2Fe + S → 2FeS
Fe + 2S → FeS
2Fe + 3S → 2FeS
7. What is the balanced equation for the reaction between nitrogen (N₂) and hydrogen (H₂) to form ammonia (NH₃)?
N₂ + H₂ → NH₃
N₂ + 3H₂ → 2NH₃
2N₂ + 3H₂ → 2NH₃
N₂ + 2H₂ → NH₃
8. Which of the following is the balanced equation for the combustion of ethane (C₂H₆)?
C₂H₆ + O₂ → CO₂ + H₂O
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
C₂H₆ + 3O₂ → 2CO₂ + 3H₂O
2C₂H₆ + 3O₂ → 4CO₂ + 6H₂O
9. What is the balanced equation for the reaction between calcium carbonate (CaCO₃) and hydrochloric acid (HCl) to form calcium chloride (CaCl₂), carbon dioxide (CO₂), and water (H₂O)?
CaCO₃ + HCl → CaCl₂ + CO₂ + H₂O
CaCO₃ + 2HCl → CaCl₂ + CO₂ + H₂O
CaCO₃ + 3HCl → CaCl₂ + CO₂ + 2H₂O
CaCO₃ + 2HCl → CaCl₂ + 2CO₂ + H₂O
10. Which of the following is the balanced equation for the reaction between zinc (Zn) and hydrochloric acid (HCl) to form zinc chloride (ZnCl₂) and hydrogen gas (H₂)?
Zn + HCl → ZnCl₂ + H₂
Zn + 2HCl → ZnCl₂ + H₂
2Zn + HCl → 2ZnCl₂ + H₂
Zn + HCl → ZnCl₂ + 2H₂
11. What is the balanced equation for the reaction between sulfur dioxide (SO₂) and oxygen (O₂) to form sulfur trioxide (SO₃)?
SO₂ + O₂ → SO₃
2SO₂ + O₂ → 2SO₃
SO₂ + 2O₂ → 2SO₃
2SO₂ + 3O₂ → 2SO₃
12. Which of the following is the balanced equation for the reaction between magnesium (Mg) and nitrogen (N₂) to form magnesium nitride (Mg₃N₂)?
3Mg + N₂ → Mg₃N₂
Mg + N₂ → Mg₃N₂
6Mg + N₂ → 2Mg₃N₂
3Mg + 2N₂ → Mg₃N₂
13. What is the balanced equation for the reaction between barium chloride (BaCl₂) and sulfuric acid (H₂SO₄) to form barium sulfate (BaSO₄) and hydrochloric acid (HCl)?
BaCl₂ + H₂SO₄ → BaSO₄ + HCl
BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl
2BaCl₂ + H₂SO₄ → BaSO₄ + 2HCl
BaCl₂ + 2H₂SO₄ → BaSO₄ + 2HCl
14. Which of the following is the balanced equation for the reaction between carbon monoxide (CO) and oxygen (O₂) to form carbon dioxide (CO₂)?
CO + O₂ → CO₂
2CO + O₂ → 2CO₂
CO + 2O₂ → CO₂
2CO + 3O₂ → 2CO₂
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