8. _____Fe + _____H2O → _____Fe3O4 + _____H2 9. BaCl2 + H2SO4 → BaSO4 + HCl 10. P + O2 → P4O10 11. KClO3 → KCl + O2 12. C3H8 + O2 → CO2 + H2O 13. Cu + AgNO3 → Cu(NO3)2 + Ag 14. Te + H2O → TeO + H2 15. La(NO3)3 + NaOH → La(OH)3 + NaNO3 16. RhO3 → + O2 17. Hf + N2 → Hf3N4 18. Ga + H2SO4 → Ga2(SO4)3 + H2 19. PdCl2 + HNO3 → Pd(NO3)2 + HCl 20. RbBr + AgCl → AgBr + RbCl 21. PaI5 → Pa + I2 22. Fe2O3 → Fe + O2 23. Cu + Cl2 → CuCl2 24. Na + O2 → Na2O 25. H2 + O2 → H2O 26. Na2SO4 + CaCl2 → CaSO4 + NaCl 27. Al2O3 → Al + O2 28. C2H6 + O2 → CO2 + H2O 29. SO3 + H2O → H2SO4 30. SiCl4 → Si + Cl2 31. C + H2 → CH4 32. Br2 + NaI → NaBr + I2 33. Zn + HCl → ZnCl2 + H2
34. H2S + O2 → H2O + SO2 35. Ba(NO3)2 + Na2SO4 → BaSO4 + NaNO3 36. C5H12 + O2 → CO2 + H2O 37. HgO → Hg + O2 38. H2SO4 + Pb + PbO2 → PbSO4 + H2O 39. C6H12O6 + O2 → CO2 + H2O 40. Ca + H2O → Ca(OH)2 + H2 41. C6H12O6 → C2H5OH + CO2 42. HC2H3O2 + NaHCO3 → CO2 + NaC2H3O2 + H2O Challenging: 43. NaCl + SO2 + H2O O2 → Na2SO4 + HCl 44. Fe2O3 + CO → CO2 + Fe 45. Ca3(PO4)2 + C + SiO2 → CaSiO3 + CO + P4 More: C + O2 → CO Mg + O2 → MgO CuO + C → Cu + CO2 NH3 + O2 → NO2 + H2O O3 → O2 Cu + AgNO3 → Cu(NO3)2 + Ag C8H18 + O2 → CO2 + H2O Sn + HF → SnF2 + H2 Al(OH)3 + HCl → AlCl3 + H2O Ca3(PO4)2 + H2SO4 → H3PO4 + CaSO4
56. Fe + O2 → Fe3O4 57. NH4NO3 → N2O + H2O 58. C + Al2O3 → Al + CO2 59. N2 + H2 → NH3 60. BaCl2 + Na2SO4 → BaSO4 + NaCl 61. C6H12O6 + O2 → CO2 + H2O 62. Al + Fe2O3 → Fe + Al2O3 63. CO2 + LiOH → Li2CO3 + H2O 64. NO + H2 → NH3 + H2O 65. Al + H2SO4 → Al2(SO4)3 + H2 66. HgO → Hg + O2 67. KClO3 → KCl + O2 68. CaBr2 + Na3P → Ca3P2 + NaBr 69. H2O + Fe → Fe2O3 + H2 70. C6H12O6 → C + H2O 71. C2H6 + O2 → CO2 + H2O 72. Li3PO4 → Li + P + O2 73. Ca(OH)2 + HNO3 → Ca(NO3)2 + H2O 74. Al2(SO4)3 + Ca(OH)2 → Al(OH)3 + CaSO4 75. P + O2 → P2O5 76. N2 + H2 → NH3 77. CH4 + O2 → CO2 + H2O
94. Hydrogen gas reacts with nitrogen gas to produce ammonia gas (NH3). 95. Hydrogen bromide gas reacts with oxygen gas to produce liquid water and bromine gas. 96. When a solid piece of magnesium is placed in hydrochloric acid, hydrogen gas bubbles off and magnesium chloride is left in solution. 97. Hydrochloric acid can be added to calcium carbonate to produce calcium chloride in solution, carbon dioxide gas and water. 98. Solid carbon disulfide can be used to form carbon dioxide gas and sulfur dioxide gas when it reacts with oxygen gas. 99. Solid manganese dioxide reacts with hydrochloric acid to produce manganese (II) chloride, liquid water and chlorine gas. 100. Write the equation for the following reaction: ammonia, NH3, reacts with hydrochloric acid to form ammonium chloride.
Chemical reactions are happening around you all the time. A match burns. A car rusts. Food spoils. Leaves decay. These are just a few chemical reactions. Probably the most important chemical reactions take place in your body. They are happening this very moment. Digestion is a chemical process. So is respiration. In every one of your trillions of cells, chemical reactions are taking place all the time. Life depends upon chemical reactions. There are several kinds of chemical reactions. One kind is a synthesis reaction. “Synthesis” means putting together. A synthesis reaction combines substances, usually elements (but sometimes smaller compounds), to form a new, larger compound. When the compound forms, we say it has been synthesized. Below is a “model” of a synthesis reaction. A + B → AB Element + Element → Compound 1. RUSTING When iron rusts, it combines with oxygen. 4Fe + 3O2 → 2Fe2O3 iron + oxygen → iron oxide (rust) Element + Element Compound 2. THE BURNING OF CARBON Charcoal is made of the element carbon, C. When carbon burns, it combines with oxygen. This produces the gas carbon dioxide, CO2. C + O2 → CO2 carbon + oxygen → carbon dioxide Element + Element Compound A synthesis reaction is like any other kind of chemical reaction. No matter is created or destroyed. The atoms just change their arrangement. Equation I: CO2 + C → 2CO2 Equation II: CO2 + H2O → H2CO3 120. How is Equation I different from the other synthesis equations seen in this packet? ________________
170. Identifying Synthesis and Decomposition Reactions: Equation A Synthesis Reaction A Decomposition Reaction Neither a. CuCl2 → Cu + Cl2 b. 3Hf + 2N2 → Hf3N4 c. Zn + 2HCl → ZnCl2 + H2 d. C3H8 + 5O2 → 4H2O + 3CO2 e. 2NaOH → 2Na + O2 + H2 f. Fe + S → g. CaCl2 + FeSO4 → Ca SO4 + FeCl2 h. 4P + 5O2 → 2P2O5 i. 3CuCl2 + 2Al → 2AlCl3 + 3Cu j. Ca(OH)2 → CaO + H2O Matching: ______ 123. synthesis reaction A) breaks down compounds ______ 124. decomposition reaction B) uses electricity ______ 125. electrolysis and heat C) methods of decomposition ______ 126. electrolysis D) simpler than a compound ______ 127. an element E) builds compounds Short Answer: 128. Does boiling decompose water? ________________ 129. What does boiling do to water? _________________________________________________________ ___________________________________________________________________________________ Activity Series of Metals
Sodium Chloride reacts with potassium to produce potassium chloride and sodium. Zinc Sulfate reacts with copper to produce zinc metal and copper (II) sulfate. Cobalt (II) oxide reacts with aluminum to produce aluminum oxide and cobalt. 139) Nickel (III) sulfate reacts with zinc to produce zinc sulfate and nickel 140. Identify (√) the following reactions as Synthesis (Syn), Decomposition (Decomp),Single Replacement (SR) or None of These Equation Synthesis Reaction Decomposition Reaction Single Replacement Reaction None of These a. C + 2S → CS2 b. 2H2O2 → 2H2 + O2 c. 2Al + 6HCl → 2AlCl3 + 3H2 d. Li3PO4 + 3NaF → 3LiF + Na3PO4 e. Zn + PbO → ZnO + Pb f. CuCl2 + 2KBr → CuBr2 + 2KCl g. CuSO4 + Fe → Cu + FeSO4 h. 2Na + Br2 → 2NaBr i. 2HgO → 2Hg + O2 j. C3H8 + 5O2 → 3CO2 + 4H2O Double Replacement Reactions: A double replacement reaction takes place between two compounds. A part of one compound changes place with a part of the other compound. This produces two new compounds.
a. Mg(OH)2 + 2HCl → MgCl2 + 2H2O b. 2Br2 + 2H2O → 4HBr + O2 c. C3H8 + 5O2 → 3CO2 + 4H2O d. 3Mg + N2 → Mg3N2 e. H2SO4 + BaCl2 → 2HCl + BaSO4 f. CH4 + 2O2 → CO2 + 2H2O g. ZnCO3 → ZnO + CO2 h. C6H10O5 +H2O → C6H12O6 i. NH4NO3 → 2H2O + N2O j. C6H12 + 9O2 → 6CO2 + 6H2O 144. Identify (√) the following reactions as Synthesis (Syn), Decomposition (Decomp), Single Replacement (SR) , Double Replacement (DR) , Combustion (C) Equation Reaction Type Syn. Decomp. S.R. D.R. C a. CO2 → C + O2 b. NaCl + AgNO3 → NaNO3 + AgCl c. S + Cl2 → SCl2 d. BaCl2 + 2NaOH → 2NaCl + Ba(OH)2 e. C3H8 + 5O2 → 3CO2 + 4H2O f. CH4 → C + 2H2 g. Pb(NO3)2 + Mg → Pb + Mg(NO3)2 h. Mg + 2HCl → MgCl2 + H2 i. H2SO4 → H2 + S + 2O2 j. 2O2 + N2 → N2O4 k. 3CaBr2 + 2Na3P → Ca3P2 + 6NaBr l. 2KI + Br2 → 2KBr + I2 m. C6H12O6 → 6C + 6H2O n. C6H12 + 9O2 → 6CO2 + 6H2O o. Si + O2 → SiO2