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Types of Reactions

Types of Reactions. Unit 7 – Chemical Reactions Ch 11.2 pages 330-336. 5 types of Chemical Reaction. 1. Synthesis: (aka. Combination) Jane goes to the school dance Jane meets Bob there They start dating ex. The combination of iron and sulfur to form iron (II) sulfide

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Types of Reactions

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  1. Types of Reactions Unit 7 – Chemical Reactions Ch 11.2 pages 330-336

  2. 5 types of Chemical Reaction 1. Synthesis: (aka. Combination) • Jane goes to the school dance • Jane meets Bob there • They start dating • ex. The combination of iron and sulfur to form iron (II) sulfide 8 Fe + S8 8 FeS

  3. 5 types of Chemical Reaction 2. Decomposition: • Jane and Bob have “issues” • Jane and Bob break up • ex. The electrolysis of water to make oxygen and hydrogen gas: 2 H2O  2 H2 + O2

  4. They meet Steve. 5 types of Chemical Reaction 3. Single Replacement: • Jane and Bob are dating. • ex: Aluminum replaces Zinc in Zinc (II) chloride to make Aluminum chloride and Zinc: Al + ZnCl2 Zn + AlCl3 Steve steals Jane from Bob, leaving Bob alone

  5. 5 types of Chemical Reaction 4. Double Replacement: • Jane and Bob are dating • Steve and Marcie are dating • They break up and swap partners • ex: Reaction of lead nitrate with potassium iodide to form lead iodide and potassium nitrate: Pb(NO3)2 + 2 KI  PbI2 + 2 KNO3

  6. 5 types of Chemical Reaction • Combustion: • Carbon/Hydrogen source + O2CO2 + H20 CO C • Exothermic (produces heat/energy) • You are a “carbon based” molecule • Breathe in – adds oxygen • Digest food – burns/releases energy • Breathe out – waste of carbon dioxide and water or or

  7. Identifying Reaction Types • Identify what type the following reactions are: • NaOH + KNO3 NaNO3 + KOH • CH4 + 2 O2 CO2 + 2 H2O • 2 Fe + 6 NaBr  2 FeBr3 + 6 Na • CaSO4 + Mg(OH)2 Ca(OH)2 + MgSO4 • Pb + O2 PbO2 • Na2CO3 Na2O + CO2 Double Repl. Combust. Single Repl. Double Synth Decomp.

  8. Identify Reaction Types + Balance • Al + HCl  AlCl3 + H2 • KClO3  KCl + O2 • Pb(NO3)2 + KI  PbI2 + KNO3 • Single Replacement • 2Al + 6HCl  2AlCl3 + 3H2 • Decomposition • 2KClO3  2KCl + 3O2 • Double Replacement • Pb(NO3)2 + 2KI  PbI2 + 2KNO3

  9. Identify Reaction Types + Balance • Ethanol (CH3CH2OH) reacts with oxygen to produce carbon dioxide and water. • Ammonia sulfide and cobalt (II) nitrate react to produce cobalt (II) sulfide and ammonia nitrate. • Combustion • CH3CH2OH+ 3O2 2CO2+ 3H2O • Double Replacement • (NH4)2S + Co(NO3)2 CoS + 2NH4NO3

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