Types of Chemical Reactions

How would YOU describe what is happening in the following generic reactions? If you were to name these types of reactions based on what is happening, how would YOU name them?

Types of Chemical Reactions Most chemical reactions that we will experience follow the general formats that you just described These 4 main types are known as: Decomposition Double-Displacement Single-Displacement Synthesis Based on your descriptions, match up the type of reaction with what you think is the actual name synthesis ______________________ decomposition single-displacement double-displacement

Synthesis Reaction (Combination) Two or more substances combine to form a new, more complex substance General Form: A + B  AB Example: 2Na + Cl2  2NaCl

Decomposition Reaction A complex substance breaks down into two or more simpler substances General Form: AB  A + B Example: 2H2O  2H2 + O2

Single-Displacement Reaction (Single-Replacement) An uncombined element replaces an element that is part of a compound General Form: A + BX  AX + B Example: 2Na + 2HOH  2NaOH + H2

Double-Displacement Reaction (Double-Replacement) The positive ion of one compound replaces the positive ion of the other compound to form 2 new compounds General Form: AX + BY  AY + BX Example: MgCO3 + 2HCl  MgCl2 + H2CO3

Practice Balance the chemical equation if necessary. (What law is this?) List the type of reaction that is occurring. 1. Li2O + H2O  LiOH 2. Pb(NO3)2 + KI  PbI2 + KNO3 3. Fe3O4 + H2  Fe + H2O 4. NH3  N2 + H2 5. CaCO3  CaO + CO2 6. SrBr2 + (NH4)2CO3  SrCO3 + NH4Br 7. C + O2  CO2 8. Cu + AgNO3  Cu(NO3)2 + Ag 2 synthesis 2 2 double-displacement 4 3 4 single-displacement decomposition 2 3 decomposition 2 double-displacement synthesis 2 single-displacement