5.2 Lecture
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5.2 Lecture Presentation Transcript

  • 1. 5.2 Reaction Types Pages 154 - 160
  • 2. Goal 1 Distinguish among and recognize the 5 general types of chemical reactions
  • 3.
    • Synthesis Reaction
      • Combines substances
      • **Two substances combine to make one
    2 Na + Cl 2  2 Na Cl
  • 4.
    • Decomposition Reaction
      • Breaks apart substances
      • **Big substance into many small substances
    2 H 2 O  2 H 2 + O 2
  • 5.
    • Combustion Reaction
      • Burning
      • **Look for O 2 and CO 2 and H 2 O
      • Organic molecule + Oxygen gas  CO 2 + water
    CH 4 + 2 O 2  C O 2 + 2 H 2 O http://www.marymount.k12.ny.us/marynet/stwbwk05/05flashchem/lyreaction/lyreaction.html
  • 6.
    • Single Displacement Reaction
      • One element switches spots
      • **one element and one compound
    3 Cu Cl 2 + 2 Al  3 Cu + 2 Al Cl 3
  • 7.
    • Double Displacement Reaction
      • Two elements switch spots
      • ** Two compounds / partner swap
    Pb (NO 3 ) 2 + K 2 (CrO 4 )  Pb (CrO 4 ) + 2 K (NO 3 ) Pb(NO3)2 + K2(CrO4)  Pb(CrO4) + 2 K(NO3)
  • 8.