What happens if magnesium reacts with water?

Answer 1

Magnesium and water...

Formula= magnesium + water --> magnesium hydroxide + hydrogen

The magnesium floats on the surface, this is a slow reaction but it much quicker with steam...

Tiny bubbles of hydrogen form on the surface and gives off hydrogen gas. This is an alkali although the metal itself isn't.

Magnesium and steam...

Formula= magnesium + steam --> magnesium oxide + hydrogen

The magnesium reacts extremely quickly and bubbles form on the surface as it fizzes and pops it is a very vigorous reaction. But it eventually stops because the magnesium hydroxide formed is almost insoluble in water and forms a barrier on the magnesium preventing any further reaction.

Mia Stradling
Magnesium metals are not affected by water at room temperature. Magnesium generally is a slow-reacting element, but reactivity increases with oxygen levels. Furthermore, magnesium reacts with water vapor to magnesium hydroxide and hydrogen gas:

Mg (s) + 2H2O(g) -> Mg(OH)2(aq) + H2(g)Mg0 - 2e -> Mg2+ reducer, oxidation

2H+ + 2e -> H20 oxidant, reduction

Answer 2

Magnesium readily oxidizes in air, and even faster if a flame is applied. It doesn't have very much available oxygen in water. Magnesium also tends to form a passification layer of oxide. This hinders further oxidation.

Answer 3

If it is a solid piece of magnesium metal at room temperature submerged in water you would barely notice hydrogen bubbles being formed. If however you had magnesium powder and raised the temperature a bit you could get a fairly violent reaction to happen.

Answer 4

Magnesium oxidizes to produce magnesium hydroxide.

Mg(solid) + 2H2O(liquid) --> Mg(OH)2(aqueous) + H2(gas)

Answer 5

It reacts to form magnesium hydroxide and hydrogen gas.

Answer 6

Mg + 2H2O --> Mg(OH)2 + H2

the products are magnesium hydroxide and hydrogen gas

This reaction is slow.

Answer 7

No the magnesium reacts with the oxygen in the water to from magnesium oxide

Mg + H2O= MgO + H2

Answer 8

Mg + 2H2O ----> Mg(OH)2 + H2