Types of chemical reactions

by: Jackson Pendle


A reaction in which two or more substances react to form a single substance. The reactants may be either elements or compounds

A + B ------> AB


1) Sodium reacting with Chlorine

2) Oxygen and Hydrogen reacting to form water



A reaction in which a compound breaks down into two or more simpler substances. The reactant must be a compound.

AB ------> A + B


1) When electricity passes through water

2) The making of cement


Single Replacement

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

A + BC --------> B + AC


1) Dipping a coil of copper wire into silver nitrate and water

2) Potassium reacting with water


Double Replacement

Two different compounds exchange positive ions and form two new compounds

AB + CD --------> AD + CB


1) When lead nitrate and potassium iodide are mixed



When a substance reacts rapidly with oxygen, often producing heat and light


1) The burning of natural gas

2) The combustion of methane