Basic oxide

In chemistry, a basic oxide is an oxide that either

Examples include:
 * reacts with water to have a proton transferred to it
 * reacts with an acid to form a salt.


 * Sodium oxide which reacts with water to produce Sodium hydroxide.
 * Magnesium oxide which reacts with water to form Magnesium hydroxide.
 * Copper(II) oxide which reacts with Nitric acid to form Copper nitrate and water.
 * i.e. CuO +  2HNO3  →  Cu(NO3)2  +  H2O

Basic oxides are oxides of metals.