Magnesium. I believe Magnesium does not react to fresh water but salt water is very corrosive and will disolve the metal.
For example uranium react with oxygen but not with water.
gold not reacts with water but reacts with Aqua regia HCl(3) : HNO3 (1)
when metals react with water they form hydroxides
Alkali metals reacts violently with water forming a hydroxide and hydrogen; alkali earth metals react with water but no so violent.Other metals doesn't generally react with water at room temperature.
Iron and Zinc
The metal reacts with water to form hydrogen Gas, the vigorous reaction causes the hydrogen to set fire; but WHY they react , is clearly to do with Ionic bonding, Metal+Non metals,
Sodium ion exist in water as the product of a dissociation; sodium (metal) react violently with water
It forms NaOH... And its reacts with explosion. .depends on quantity of Na
That depends on what they react with. If an acid reacts with a metal the products are usually hydrogen gas and a salt. If one reacts with a base the products are usually water (or a weak acid) and a salt. If an acid reacts with a carbonate the products are carbon dioxide, water, and a salt.
Metals that react well with water: Sodium - fizzes Potassium - burns Caesium - explodes Metals that react well with acids: Magnesium
Beryllium is the only alkaline metal that reacts to oxygen but not to water. The hydrogen in water stabilizes the reaction.
Copper burns and reacts in the air to form copper oxide, however i htink it reacts very slowly with water. Hope that helped ;)