calcium oxide + water aluminum + bromine Decomposition Reaction A single compound breaks down into its component parts or simpler compounds. Examples of decomposition reactions: Basic form: AX A + X → Metallic carbonates, when heated, form metallic oxides and CO2(g). EX. CaCO3(s) CaO(s) + CO2(g) → Most metallic hydroxides, when heated, decompose into metallic oxides and water. EX. Ca(OH)2(s) CaO(s) + H2O(g) → Metallic chlorates, when heated, decompose into metallic chlorides and oxygen. EX. 2KClO3(s) 2KCl(s) + 3O2(g) → Some acids, when heated, decompose into nonmetallic oxides and water. EX. H2SO4 H2O(l) + SO3(g) → Some oxides, when heated, decompose. EX. 2HgO(s) 2Hg(l) + O2(g) → Some decomposition reactions are produced by electricity. EX. 2H2O(l) 2H2(g) + O2(g) → EX. 2NaCl(l) 2Na(s) + Cl2(g) → Write the reactant formula, predict the product in words and write the product formula, then balance. ___ CaBr ___ Ca + ___ Br2 ______NaCl ____Na + _____Cl2
calcium oxide + water aluminum + bromine Decomposition Reaction A single compound breaks down into its component parts or simpler compounds. Basic form: AX → A + X Examples of decomposition reactions: Metallic carbonates, when heated, form metallic oxides and CO2(g). EX. CaCO3(s) → CaO(s) + CO2(g) Most metallic hydroxides, when heated, decompose into metallic oxides and water. EX. Ca(OH)2(s) → CaO(s) + H2O(g) Metallic chlorates, when heated, decompose into metallic chlorides and oxygen. EX. 2KClO3(s) → 2KCl(s) + 3O2(g) Some acids, when heated, decompose into nonmetallic oxides and water. EX. H2SO4 → H2O(l) + SO3(g) Some oxides, when heated, decompose. EX. 2HgO(s) → 2Hg(l) + O2(g) Some decomposition reactions are produced by electricity. EX. 2H2O(l) → 2H2(g) + O2(g) EX. 2NaCl(l) → 2Na(s) + Cl2(g) Write the reactant formula, predict the product in words and write the product formula, then balance. ______NaCl ____Na + _____Cl2 ___ CaBr ___ Ca + ___ Br2
HS_Chem_Unit4_Stoichiometry_Interactive_Notebookl_2013-2014_102013.docx