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III. Types of Chemical Reactions (p. 289 - 296)

Ch. 9 – Chemical Reactions. III. Types of Chemical Reactions (p. 289 - 296). A. Combustion. the burning of any substance in O 2 to produce heat, usually a hydrocarbon. C X H Y + O 2  CO 2 + H 2 O. CH 4 (g) + 2O 2 (g)  CO 2 (g) + 2H 2 O (g). B. Synthesis.

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III. Types of Chemical Reactions (p. 289 - 296)

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  1. Ch. 9 – Chemical Reactions III. Types of Chemical Reactions(p. 289 - 296)

  2. A. Combustion • the burning of any substance in O2 to produce heat, usually a hydrocarbon CXHY + O2 CO2 + H2O CH4(g) + 2O2(g)  CO2(g) + 2H2O(g)

  3. B. Synthesis • the combination of 2 or more substances to form a compound • only one product A + B  AB

  4. B. Synthesis H2(g) + Cl2(g)  2 HCl(g)

  5. C. Decomposition • a compound breaks down into 2 or more simpler substances • only one reactant AB  A + B

  6. C. Decomposition 2 H2O(l)  2 H2(g) + O2(g)

  7. D. Single Replacement • one element replaces another in a compound • metal replaces metal (+) • nonmetal replaces nonmetal (-) A + BC  B + AC

  8. D. Single Replacement Cu(s) + 2AgNO3(aq)  Cu(NO3)2(aq) + 2Ag(s)

  9. E. Double Replacement • ions in two compounds “change partners” • cation of one compound combines with anion of the other AB + CD  AD + CB

  10. E. Double Replacement Pb(NO3)2(aq) + K2CrO4(aq)  PbCrO4(s) + 2KNO3(aq)

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