Types of Chemical Reactions

By: Adam Roshetko

Synthesis

Def: a reaction in which two or more substances react to form a single substance

Equation: A+B --> AB

EX: 2 Na+Cl2 --> 2 NaCl

Decomposition

Def: a reaction in which a compound breaks down into two or more simpler substances

Equation: AB --> A+B

EX: 2 H2O --> 2 H2 + O2

Single Replacement

Def: a reaction in which one element takes the place of another element in a compound

Equation: A+BC --> B + AC

EX: Cu +2 AgNO3 --> 2 Ag + Cu(NO3)2

Double Replacement

Def: a reaction in which two different compounds exchange positive ions and form two new compounds

Equation: AB+CD --> AD+BC

EX: Pb(NO3)2 + 2 KI --> PbI2 + 2 KNO3

Combustion

Def: a reaction in which substance reacts rapidly with oxygen, often producing heat and light

Equation: CxHx + O2 --> CO2 + H2O

EX: CH4 + 2 O2 --> CO2 + 2 H2O