Worksheet #3: Decomposition Reactions In decomposition reactions, one compound will break down into two or more parts. 1. barium carbonate Æ 2. magnesium carbonate Æ 3. potassium carbonate Æ 4. zinc hydroxide Æ 5. Iron(II) hydroxide Æ 6. nickel(II) chlorate Æ 7. sodium chlorate Æ 8. potassium chlorate Æ 9. sulfuric acid Æ 10. carbonic acid Æ 11. aluminum oxide Æ 12. silver oxide ÆWorksheet #3: Decomposition Reactions In decomposition reactions, one compound will break down into two or more parts. 1. barium carbonate Æ barium oxide + carbon dioxide BaCO3 Æ BaO + CO2 2. magnesium carbonate Æ magnesium oxide + carbon dioxide MgCO3 Æ MgO + CO2 3. potassium carbonate Æ potassium oxide + carbon dioxide K2CO3 Æ K2O + CO2 4. zinc hydroxide Æ zinc oxide + water Zn(OH)2 Æ ZnO + H2O 5. iron(II) hydroxide Æ iron(II) oxide + water Fe(OH)2 Æ FeO + H2O 6. nickel(II) chlorate Æ nickel(II) chloride + oxygen Ni(ClO3)2 Æ NiCl2 + 3O2 7. sodium chlorate Æ sodium chloride + oxygen 2NaClO3 Æ 2NaCl + 3O2 8. potassium chlorate Æ potassium chloride + oxygen 2KClO3 Æ 2KCl + 3O2 9. sulfuric acid Æ water + sulfur trioxide H2SO4 Æ H2O + SO3 10. carbonic acid Æ water + carbon dioxide H2CO3 Æ H2O + CO2 11. aluminum oxide Æ aluminum + oxygen 2Al2O3 Æ 4Al + 3O2 12. silver oxide Æ silver + oxygen 2Ag2O Æ 4Ag +
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