Metals typically react with either bases or acids to form different products. The type of reaction that occurs depends on the specific metal and the strength of the base or acid.

1. Reaction with Bases:

Metals react with bases to form metal hydroxides and release hydrogen gas. This type of reaction is commonly observed with active metals such as sodium, potassium, calcium, and magnesium. The general equation for this reaction is:

Metal + Base → Metal Hydroxide + Hydrogen Gas

For example:

2Na(s) + 2NaOH(aq) → 2Na+(aq) + 2OH-(aq) + H2(g)

Ca(s) + 2KOH(aq) → Ca(OH)2(aq) + H2(g)

2. Reaction with Acids:

Metals react with acids to form metal salts and release hydrogen gas. This reaction occurs with most metals, except for some noble metals such as gold and platinum. The general equation for this reaction is:

Metal + Acid → Metal Salt + Hydrogen Gas

For example:

Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

Fe(s) + 2H2SO4(aq) → FeSO4(aq) + H2(g)

In summary, metals react with bases to form metal hydroxides and release hydrogen gas, while they react with acids to form metal salts and release hydrogen gas. The reactivity of metals with bases and acids depends on the specific metal and the strength of the base or acid.