Question

How does Zinc and Magnesium react when in hot water?
Eg. Do they create hydrogen gas bubbles?

Answer 1

It reacts with hot water to form magnesium hydroxide and hydrogen. Metals like aluminium, iron and zinc do not react either with cold or hot water. But they react with steam to form the metal oxide and hydrogen. ... Therefore metals can displace hydrogen while non-metals cannot.

Answer 2

Hey user !!

yes they create hydrogen gas bubbles .

Metal reacts with water to form a metal oxide.Magnesium metaldoes however react with steam to givemagnesium oxide (MgO) (ormagnesium hydroxide, Mg(OH)2, with excess steam) and hydrogen gas (H2).Zinc does not react with water, because it, too, forms a protective layer of insoluble zinchydroxide, Zn(OH)2 .It reacts very slowly with hot water. Itreacts with steam when being heated and gives hydrogen gas and metal oxide. They do not react with cold orhot water. They react with steam when being heated and give hydrogen gas and metal oxides.

hope this helps!!!