when metals react with water they form hydroxides
This depends on the metal in reaction.
Many metals reacts with acids forming salts.
hydrogen gas
hydrogen?
Amphoteric
The Metal hydroxides are strong base, therefore metal hydroxide decomposes on heating to form metal oxide and water.
The alkali metals and the alkaline earths. These include sodium, potassium, rubidium, calcium etc.
strong bases
strong bases
Zinc
metal compound and chlorine