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Balancing Chemical Equations

Balancing Chemical Equations. CA Standards. Students know how to describe chemical reactions by writing balanced equations. Law of Conservation of Mass. In ordinary chemical reactions, the total mass of reacting substances is equal to the total mass of products

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Balancing Chemical Equations

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  1. Balancing Chemical Equations

  2. CA Standards Students know how to describe chemical reactions by writing balanced equations.

  3. Law of Conservation of Mass • In ordinary chemical reactions, the total mass of reacting substances is equal to the total mass of products • All atoms on the reactant side must appear on the product side, and in equal numbers • No new elements may appear • No elements may disappear

  4. Synthesis Reactions 1. ___CaO + ___H2O  ___Ca(OH)2 2. ___P4 + ___O2 ___P2O5 3. ___Ca + ___O2 ___CaO 4. ___Cu + ___S8  ___ CuS 5. ___CaO + ___H2O  ___Ca(OH)2 6. ___S8 + ___O2 ___SO2 7. ___H2 + ___N2 ___NH3 8. ___H2 + ___Cl2 ___HCl 9. ___Ag + ___S8 ___Ag2S 10. ___Cr + ___O2 ___Cr2O3 11. ___Al + ___Br2 ___AlBr3 12. ___Na + ___I2 ___NaI 13. ___H2 + ___O2 ___H2O 14. ___Al + ___O2 ___Al2O3

  5. Decomposition Reactions 15. ___BaCO3 ___BaO + ___CO2 16. ___MgCO3 ___MgO + ___CO2 17. ___K2CO3 ___K2O + ___CO2 18. ___Zn(OH)2 ___ZnO + ___H2O 19. ___Fe(OH)2 ___FeO + ___H2O 20. ___Ni(ClO3)2 ___NiCl2 + ___O2 21. ___NaClO3 ___NaCl + ___O2 22. ___KClO3 ___KCl + ___O2 23. ___H2SO4 ___H2O + ___SO3 24. ___H2CO3 ___H2O + ___CO2 25. ___Al2O3 ___Al + ___O2 26. ___Ag2O  ___Ag + ___O2

  6. Decomposition Reactions 15. ___BaCO3 ___BaO + ___CO2 16. ___MgCO3 ___MgO + ___CO2 17. ___K2CO3 ___K2O + ___CO2 18. ___Zn(OH)2 ___ZnO + ___H2O 19. ___Fe(OH)2 ___FeO + ___H2O 20. ___Ni(ClO3)2 ___NiCl2 + ___O2 21. ___NaClO3 ___NaCl + ___O2 22. ___KClO3 ___KCl + ___O2 23. ___H2SO4 ___H2O + ___SO3 24. ___H2CO3 ___H2O + ___CO2 25. ___Al2O3 ___Al + ___O2 26. ___Ag2O  ___Ag + ___O2

  7. Single Replacement Reactions 27. ___AgNO3 + ___Ni  ___Ni(NO3)2 + ___Ag 28. ___AlBr3 + ___Cl2 ___AlCl3 + ___Br2 29. ___NaI + ___Br2 ___NaBr + ___I2 30. ___Ca + ___HCl ___CaCl2 + ___H2 31. ___Mg + ___HNO3 ___Mg(NO3)2 + ___H2 32. ___ Zn + ___H2SO4 ___ZnSO4 + ___H2 33. ___K + ___H2O  ___KOH + ___H2 34. ___Na + ___H2O  ___NaOH + ___H2

  8. Double Replacement Reactions 35. ___AlI3 + ___HgCl2 ____AlCl3 + ____HgI2(ppt) 36. ___HCl + ___NaOH ___NaCl ___H2O 37. ___BaCl2 + ___H2SO4 ___BaSO4 + ___HCl 38. ___Al2(SO4)3 + ___Ca(OH)2 ___Al(OH)3 + ___CaSO4 39. ___AgNO3 + ___K3PO4 ___Ag3PO4 + ___KNO3 40. ___CuBr2 + ___AlCl3 ___CuCl2 + ___AlBr3 41. ___Ca(C2H3O2)2 + ___Na2CO3 ___CaCO3 + ___NaC2H3O2 42. ___NH4Cl + ___Hg2(C2H3O2)2 ___NH4 C2H3O2 + ___Hg2Cl2 43. ___Ca(NO3)2 + ___HCl ___CaCl2 + ___HNO3 44. ___FeS + ___HCl ___FeCl2 + ___H2S 45. ___Cu(OH)2 + ___HC2H3O2 ___Cu(C2H3O2)2 + ___H2O 46. ___Ca(OH)2 + ___H3PO4 ___Ca3(PO4)2 + ___H2O 47. ___CaBr2 + ___KOH  ___Ca(OH)2 + ___KBr

  9. Combustion Reactions 48. ___CH4 + ___O2 ___CO2 + ___H2O 49. ___C2H6 + ___O2 ___CO2 + ___H2O 50. ___C3H8 + ___O2 ___CO2 + ___H2O 51. ___C4H10 + ___O2 ___CO2 + ___H2O 52. ___C5H12 + ___O2 ___CO2 + ___H2O 53. ___C6H14 + ___O2 ___CO2 + ___H2O 54. ___C2H4 + ___O2 ___CO2 + ___H2O 55. ___C2H2 + ___O2 ___CO2 + ___H2O 56. ___C6H6 + ___O2 ___CO2 + ___H2O

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