Chemical reactions

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Chemical reactions

  1. 1. 8 th Grade Science Chemical Reactions
  2. 2. Watch the movie and then complete the chart. A = Red B = Blue C = Green D = Yellow A + B -> AB AB -> A + B AB + C -> AC + B AB + CD -> AC + BD Two or more elements or compounds combine to make a more complex substance Compounds break down into simpler substances Occurs when one element replaces another one in a compound Occurs when different atoms in two different compounds trade places Chemical Reactions Type of Reaction Definition  Equation Synthesis Decomposition Single Replacement Double Replacement
  3. 3. Identifying Chemical Reactions ____ P + O 2 -> P 4 O 10 ____ Mg + O 2 -> MgO ____ HgO -> Hg + O 2 ____ Al 2 O 3 -> Al + O 2 ____ Cl 2 + NaBr -> NaCl + Br 2 ____ H 2 + N 2 -> NH 3 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  
  4. 4. ____ Na + Br 2 -> NaBr ____ CuCl 2 + H 2 S -> CuS + HCl   ____ HgO + Cl 2 -> HgCl + O 2 ____ C + H 2 -> CH 4   ____ KClO 3   ->   KCl  +  O 2   ____ S 8 + F 2 -> SF 6   ____ BaCl 2   +   Na 2 SO 4 ->     NaCl   +   BaSO 4

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