Bases are compounds that contain the oxide (O2-) or hydroxide (OH-) ions and neutralize acids to form salt and water only.
There are both soluble and insoluble bases. Soluble bases are known as alkali’s and they produces hydroxide ions(OH-) in aqueous solution.
Properties of bases
-When soluble are called alkali’s
-React with acids to form salt and water
-Produce OH- ions when soluble in water
-pH is greater than 7
-turn moist litmus paper blue
-good conductors of electricity in aqueous solution