Can you identify the type of reaction and predict what gets made? Types of Reactions Can you identify the type of reaction and predict what gets made?

Types of Chemical Reactions There are thousands of different chemical reactions. 4 Major Types (Patterns) Synthesis Decomposition Single Displacement Double Displacement

1. Synthesis Two reactants combine to make a new substance. X + Y  XY ie. Na + Cl2  H2O (When 2 become 1.)

Synthesis Tom Katie Tomcat

Synthesis Rxn Real Life: Table Salt

2. Decomposition One substance breaks apart into 2 substances. XY  X + Y ie. H2O2  H2O + O2 (Breakin’ Down)

Decomposition Ben Jennifer Bennifer

Decomposition Demo: Peroxide Marshmallow Experiment Peroxide in 100 mL grad cylinder placed in large container. Add hand soap and small amount KI

Decomposition Rxn Real Life: Ammonium Nitrate (Fertilizer) Carbonic acid (Pop Fizz)

Is each reaction synthesis or decomposition? Ag2CO3  Ag2O + CO2 P4 + O2  P4O10 Fe + O2  Fe2O3 KClO3  KCl + O2 Synthesis Synthesis Decomposition

Synthesis Decomposition

3. Single Displacement One element takes the place (displaces) of another element in a compound. Like stealing a dance partner. A + BX  AX + B ie. HCl + Zn  H2 + ZnCl2

Brad & Jen Angelina Jennifer Brangelina

Single Displacement Rxn Real Life: 2AgNO3(aq) + Cu(s)  Cu(NO3)2(aq) + 2Ag(s)

4. Double Displacement Cations of two compounds exchange places to form 2 new compounds. Like switching dance partners. AB + CD  AD + CB ie. NaOH + HCl  NaCl + H2O

Dawson & Joey Pacey & Jen Pacey & Jen

Double Displacement Rxn Real Life: NaOH(aq) + HCl(aq)  NaCl(aq) + H2O(l)

Double Displacement Demo: Lead Iodide production Add a few drops of Pb(NO3)2 to some KI. Equation: Pb(NO3)2 + KI  PbI2 + KNO3

Try Some. Is it single displacement (SD) or double displacement (DD)? NaBr + Ca(OH)2  CaBr2 + NaOH Pb + H3PO4  H2 + Pb3(PO4)2 Li3N + NH4NO3  LiNO3 + (NH4)3N CuSO4 + Al  Al2(SO4)3 + Cu DD SD DD SD

Putting it all together: Which Type of Reactions are the following: Decomposition a) H2O  H2 + O2 b) SiO2 + HF  SiF4 + H2O c) H2 + O2  H2O d) Cu + HCl  H2 + CuCl2 Double Displacement Synthesis Single Displacement

Pick your answer from this box Predict What Gets Made Al + Cl2  CuF2 + K  MgO  CaS + FeN  Pick your answer from this box Mg Ca3N2 F2 KF2 Cu N2 AlCl2 CaFe AlF3 FeS O2 SN