# How do bases react with metals?

##### 1 Answer
Oct 1, 2015

Depends on the metal.

#### Explanation:

Most metals will not react with bases. But others, called amphoteric metals, may form salts with them.

Example :
Aluminium will form a salt with acids, like:
$A l + 3 H C l \to A l C {l}_{3} + 1.5 {H}_{2}$ (aluminium chloride)
Or $A l + 3 {H}^{+} \to A {l}^{3 +} + 1.5 {H}_{2}$

But also with a base, like:
$A l + 3 N a O H \to N {a}_{3} A l {O}_{3} + 1.5 {H}_{2}$ (sodium aluminate)
Or $A l + 3 O {H}^{-} \to A l {O}_{3}^{3 -} + 1.5 {H}_{2}$

(I know I should have multiplied the whole equation by 2 to get rid of the 1.5, but the ${H}_{2}$ is not important for the story).

Whether or not a metal is amphoteric depends on its place in the periodic system.