Q:

What is formed when a metal reacts with water?

A:

Quick Answer

A metal hydroxide and hydrogen gas form when a metal reacts with water. The metal hydroxide is a strong base. Reactions between a metal (especially an alkali metal) and water usually produce a violent scene.

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Full Answer

According to a page on the Towson University website, when a metal reacts with water, the metal combines with oxygen and hydrogen to form a strong base. The oxygen and hydrogen are combined chemically to form a hydroxide, which acts as a single entity. The metal has few valence electrons, so it tends to act as an electron donor; the hydroxide is an electron acceptor. The alkali metals such as sodium, potassium and cesium are so reactive that their reactions with water may cause explosions.

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