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Chemical Reaction Types. Types of Reactions. Chemical reactions are classified into five general types Synthesis (Combination, Addition) Decomposition Single Replacement Double Replacement Combustion. Synthesis ( Combination, Addition).

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## Chemical Reaction Types

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**LecturePLUS Timberlake 99**Chemical Reaction Types**LecturePLUS Timberlake 99**Types of Reactions Chemical reactions are classified into five general types • Synthesis (Combination, Addition) • Decomposition • Single Replacement • Double Replacement • Combustion**LecturePLUS Timberlake 99**Synthesis (Combination, Addition) Two or more elements/simple compounds combine to form (synthesize) one product A + B AB 2Mg + O2 2MgO 2Na + Cl2 2NaCl SO3 + H2O H2SO4**LecturePLUS Timberlake 99**Decomposition One substance is broken down (split) into two or more simpler substances. AB A + B 2HgO 2Hg + O2 2KClO3 2KCl + 3 O2**LecturePLUS Timberlake 99**Learning Check R1 Classify the following reactions as 1) combination or 2) decomposition: ___A. H2 + Br2 2HBr ___B. Al2(CO3)3 Al2O3 + 3CO2 ___C. 4 Al + 3C Al4C3**LecturePLUS Timberlake 99**Solution R1 Classify the following reactions as 1) combination or 2) decomposition: _1_A. H2 + Br2 2HBr _2_B. Al2(CO3)3 Al2O3 + 3CO2 _1_C. 4 Al + 3C Al4C3**LecturePLUS Timberlake 99**Single Replacement One element takes the place of an element in a reacting compound. A + BC AB + C Zn + 2HCl ZnCl2 + H2 Fe + CuSO4 FeSO4 + Cu**LecturePLUS Timberlake 99**Double Replacement Two elements in reactants take the place of each other AB + CD AD + CB AgNO3 + NaCl AgCl+ NaNO3 ZnS + 2HCl ZnCl2 + H2S**LecturePLUS Timberlake 99**Learning Check R2 Classify the following reactions as 1) single replacement 2) double replacement __A. 2Al + 3H2SO4 Al2(SO4)3 + 3H2 __B. Na2SO4 + 2AgNO3 Ag2SO4 + 2NaNO3 __C. 3C + Fe2O3 2Fe + 3CO**LecturePLUS Timberlake 99**Solution R2 Classify the following reactions as 1) single replacement 2) double replacement 1_A. 2Al + 3H2SO4 Al2(SO4)3 + 3H2 2_B. Na2SO4 + 2AgNO3 Ag2SO4 + 2NaNO3 1_C. 3C + Fe2O3 2Fe + 3CO**LecturePLUS Timberlake 99**Combustion A reaction in which a compound (often carbon) reacts with oxygen C + O2 CO2 CH4 + 2O2 CO2 + 2H2O C3H8 + 5O2 3CO2 + 4H2O C6H12O6 + 6O2 6CO2 + 6H2O**LecturePLUS Timberlake 99**Learning Check R3 Balance the combustion equation ___C5H12 + ___O2 ___CO2+ ___H2O**LecturePLUS Timberlake 99**Solution R3 Balance the combustion equation 1 C5H12 + 8 O2 5 CO2+ 6 H2O

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