8th Grade Science T. Trimpe http://sciencespot.net/ Watch the movie and then complete the chart. Type of Reaction Definition Equation A + B → AB Synthesis Two or more elements or compounds combine to make a more complex substance Decomposition Compounds break down into simpler substances Single Replacement Occurs when one element replaces another one in a compound AB + C → AC + B Double Replacement Occurs when different atoms in two different compounds trade places AB + CD → AC + BD AB → A + B A = Red B = Blue C = Green D = Yellow 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 ____ P + D = Decomposition SR = Single Replacement O2 → P4O10 ____ HgO → Hg + O2 ____ Cl2 + NaBr → NaCl + Br2 DR = Double Replacement ____ Mg + O2 → MgO ____ Al2O3 → Al + O2 ____ H2 + N2 → NH3 ____ Na + Br2 → NaBr ____ CuCl2 + H2S → CuS + HCl ____ HgO + Cl2 → HgCl + O2 ____ C + H2 → ____ KClO3 → ____ S8 + KCl + ____ BaCl2 + Na2 SO4 → O2 NaCl + BaSO4 F2 → CH4 SF6