Balancing Equations Practice Quiz

Here are 10 unbalanced equations. Select the correct balanced equation.

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  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College

  Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.

  Updated on October 26, 2020 1. ___ SnO₂ + ___ H₂ → ___ Sn + ___ H₂O 2 SnO₂ + 2 H₂ → 2 Sn + H₂O SnO₂ + 2 H₂ → Sn + 2 H₂O SnO₂ + H₂ → Sn + 2 H₂O 2 SnO₂ + H₂ → 2Sn + H₂O Correct Wrong 2. __ KOH + __ H₃PO₄ → __ K₃PO₄ + __ H₂O 3 KOH + 2 H₃PO₄ → 3 K₃PO₄ + 3 H₂O KOH + H₃PO₄ → K₃PO₄ + 6 H₂O 3 KOH + H₃PO₄ → K₃PO₄ + 3 H₂O 2 KOH + H₃PO₄ → K₃PO₄ + H₂O Correct Wrong 3. __ KNO₃ + __ H₂CO₃ → __ K₂CO₃ + __ HNO₃ 2 KNO₃ + H₂CO₃ → K₂CO₃ + 2 HNO₃ 2 KNO₃ + 2 H₂CO₃ → K₂CO₃ + 2 HNO₃ KNO₃ + H₂CO₃ → K₂CO₃ + HNO₃ 2 KNO₃ + 2 H₂CO₃ → K₂CO₃ + 3 HNO₃ Correct Wrong 4. __ AgI + __ Na₂S → __ Ag₂S + __ NaI AgI + Na₂S → Ag₂S + 2 NaI 2 AgI + 2 Na₂S → 2 Ag₂S + 2 NaI 2 AgI + 2 Na₂S → Ag₂S + 2 NaI 2 AgI + Na₂S → Ag₂S + 2 NaI Correct Wrong 5. __ Ba₃N₂ + __ H₂O → __ Ba(OH)₂ + __ NH₃ 2 Ba₃N₂ + 3 H₂O → 2 Ba(OH)₂ + 2 NH₃ Ba₃N₂ + 6 H₂O → 3 Ba(OH)₂ + 2 NH₃ Ba₃N₂ + 3 H₂O → 3 Ba(OH)₂ + 2 NH₃ Ba₃N₂ + H₂O → Ba(OH)₂ + NH₃ Correct Wrong 6. __ CaCl₂ + __ Na₃PO₄ → __ Ca₃(PO₄)₂ + __ NaCl 2 CaCl₂ + 2 Na₃PO₄ → 2 Ca₃(PO₄)₂ + NaCl CaCl₂ + Na₃PO₄ → Ca₃(PO₄)₂ + NaCl 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 3 NaCl Correct Wrong 7. __ FeS + __ O₂ → __ Fe₂O₃ + __ SO₂ 2 FeS + O₂ → 2 Fe₂O₃ + 2 SO₂ FeS + O₂ → Fe₂O₃ + SO₂ 3 FeS + 2 O₂ → 3 Fe₂O₃ + 2 SO₂ 4 FeS + 7 O₂ → 2 Fe₂O₃ + 4 SO₂ Correct Wrong 8. __ C₂H₆O + __ O₂ → __ CO₂ + __ H₂O 2 C₂H₆O + O₂ → CO₂ + 3 H₂O C₂H₆O + 3 O₂ → 2 CO₂ + 3 H₂O C₂H₆O + 2 O₂ → 3 CO₂ + 3 H₂O 2 C₂H₆O + O₂ → 2 CO₂ + H₂O Correct Wrong 9. __ TiCl₄ + __ H₂O → __ TiO₂ + __ HCl TiCl₄ + 2 H₂O → TiO₂ + 2 HCl TiCl₄ + 2 H₂O → TiO₂ + 4 HCl 2 TiCl₄ + H₂O → 2 TiO₂ + HCl TiCl₄ + 4 H₂O → TiO₂ + 4 HCl Correct Wrong 10. __ Na₃PO₄ + __ HCl → __ NaCl + __ H₃PO₄ Na₃PO₄ + HCl → NaCl + H₃PO₄ Na₃PO₄ +3 HCl → 3 NaCl + H₃PO₄ 3 Na₃PO₄ + HCl → 3 NaCl + H₃PO₄ Na₃PO₄ + 3 HCl → NaCl + H₃PO₄ Correct Wrong Balancing Equations Practice Quiz You got: % Correct. You Need More Practice Balancing Equations

  Good job! You completed the quiz, so you got practice balancing equations. However, you missed some questions, so you might want to review the steps to balancing equations or print free practice worksheets. If you feel ready to move on, learn about mass relations in balanced equations.

  Are you ready to try another quiz? See how well you can do metric unit conversions.

  Share Your Results Balancing Equations Practice Quiz You got: % Correct. Step to the Head of the Class

  Great job! You did so well on this quiz you could tutor others on how to balance equations! If you're feeling a bit shaky on all the steps and details, you can review the simple method of balancing equations. Otherwise, you may wish to review how to balance oxidation-reduction or redox reactions or move on to understanding mole relations in balanced equations.

  Ready to try another quiz? See whether you're safe in the chemistry lab (or are an accident waiting to happen).

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