Chemical Reactions Types of Reactions

Types of Reactions Decomposition Reactions A compound breaks down into two or more simple substances. AB  A + B

Types of Reactions Synthesis Reactions Two or more substances combine to form a single product. A + B  AB Zn + I  ZnI

Types of Reactions Single-displacement (replacement) Reactions One single element takes the place of another element in a compound. A + BC  B + AC

Types of Reactions Double-displacement (replacement) Reactions The positive portions of two ionic compounds are interchanged. AB + CD  CB + AD

Types of Reactions Acid/Base Reaction Neutralization reaction between an acid and a base. ALWAYS involves a hydrogen ion (H+) in an acid on the reactant side. H2O is ALWAYS a product.

Types of Reactions Combustion A substance rapidly combines with oxygen to form one or more oxides. O2 is always a reactant and H2O is always a product. Results in a flame. Methane Oxygen Carbon Dioxide Water

Types of Reactions Combustion Reactions A + O  AO (oxide)

Types of Reactions Redox Reactions Oxidation-Reduction Reaction Classified by the transfer of electrons from one atom to another.