TYPES OF CHEMICAL REACTIONS

Watch the video and answer questions on your worksheet 

Watch the movie and then complete the chart. Type of Reaction Definition  Equation Synthesis Decomposition Single Replacement Double Replacement Two or more elements or compounds combine to make a more complex substance A + B → AB AB → A + B Compounds break down into simpler substances Occurs when one element replaces another one in a compound AB + C → AC + B Occurs when different atoms in two different compounds trade places AB + CD → AC + BD A = Red B = Blue C = Green D = Yellow

Synthesis Reactions EX: 4 Al + 3 O2 2 Al2O3 2 Na + Cl2 2 NaCl Two reactants combine to form ONE product “Addition” reaction General format: A + B AB EX: 4 Al + 3 O2 2 Al2O3 2 Na + Cl2 2 NaCl

Soap Opera Version “Going Out”  +

Decomposition Reactions ONE reactant breaks down into two or more products Opposite of synthesis General Format: AB A + B EX: 2 KClO3 2 KCl + 3 O2 2 MgO 2 Mg + O2

Soap Opera Version The “Break-Up”  +

Single Displacement Reactions One ELEMENT replaces another element in a compound General Format: A + BC AC + B EX: Ca + 2 Ag(NO3) 2 Ag + Ca(NO3)2 Fe + CuCl2 FeCl2 + Cu

Soap Opera Version “The Home Wrecker”  + +

Double Displacement Reactions TWO compounds produce two NEW COMPOUNDS The positive ions replace each other General Format: AB + CD AD + CB EX: NaCl + KBr NaBr + KCl 2 K(OH) + Pb(NO3)2 2 K(NO3) + Pb(OH)2 H3(PO4) + 3 K(OH) K3(PO4) + 3 H2O

Soap Opera Version “Wife Swap ”  + +

Combustion Reactions A HYDROCARBON (contains hydrogen and carbon and sometimes oxygen) combines with OXYGEN to form CARBON DIOXIDE and WATER General Format: CXHY + O2 CO2 + H2O EX: CH4 + 2 O2 CO2 + 2 H2O

Identifying Chemical Reactions 2. Use colored pencils to circle the common atoms or compounds in each equation to help you determine the type of reaction it illustrates. Use the code below to classify each reaction. S = Synthesis D = Decomposition SR = Single Replacement DR = Double Replacement   ____ P + O2 → P4O10 ____ Mg + O2 → MgO ____ HgO → Hg + O2 ____ Al2O3 → Al + O2 ____ Cl2 + NaBr → NaCl + Br2 ____ H2 + N2 → NH3

____ Na + Br2 → NaBr ____ CuCl2 + H2S → CuS + HCl   ____ HgO + Cl2 → HgCl + O2 ____ C + H2 → CH4 ____ KClO3  →   KCl  +  O2  ____ S8 + F2 → SF6 ____ BaCl2   +   Na2 SO4 →     NaCl   +   BaSO4

Your Turn!! synthesis single displacement single displacement 2 Ca + O2  2 CaO Br2 + 2 LiI 2 LiBr + I2 2 Al + 3 Fe(NO3)2  2 Al(NO3)3 + 3 Fe MgO + HCl  MgCl2 + H2O 2 C4H10 + 13 O2  8 CO2 + 10 H2O single displacement single displacement double displacement combustion

Your Turn!! decomposition double displacement double displacement 2 H2O2  2 H2O + O2 2 (NH4)3(PO4) + 3 Sr(OH)2  Sr3(PO4)2 + 6 (NH4)(OH) H2(SO4) + 2 Na(OH)  Na2(SO4) + 2 H2O Zn + 2 Ag(NO3)  Zn(NO3)2 + 2 Ag Cu(NO3) + KCl  K(NO3) + CuCl decomposition double displacement double displacement single displacement double displacement