Metals and water
Metal oxide and hydrogen.
A metal meets water
A reactive metal is dropped in water in a lab.
Which gas is given off when a metal reacts with water?
What this lesson covers
The idea
Metals that react with water produce a metal oxide and hydrogen gas, and a water-soluble metal oxide dissolves further to form a metal hydroxide; not all metals react with water.
A metal meets water
A reactive metal is dropped in water in a lab.
Which gas is given off when a metal reacts with water?
- Hydrogen
- Oxygen
- Carbon dioxide
What forms
Press Next step.
Metal, water, hydrogen
When a metal reacts with water it gives a metal oxide and hydrogen gas. If the oxide is soluble in water, it dissolves and forms a metal hydroxide. Not all metals react with water.
Metals that react with water produce a metal oxide and hydrogen gas, and a water-soluble metal oxide dissolves further to form a metal hydroxide; not all metals react with water.
Notes
Metals that react with water give a metal oxide and hydrogen; a soluble oxide forms a metal hydroxide; not all metals react.
Check yourself
When a metal reacts with water, the gas formed is ...
A metal oxide that is soluble in water dissolves and forms ...
Do all metals react with water?
- oxygen. Oxygen is not formed; the gas is hydrogen.
- carbon dioxide. Carbon is not involved; the gas is hydrogen.
- hydrogen — correct. Yes!
- a metal hydroxide — correct. Yes!
- a metal sulphide. No sulphur is involved; a soluble oxide forms a metal hydroxide.
- a metal carbonate. No carbon is involved; a soluble oxide forms a metal hydroxide.
- Yes, all of them. The book says that all metals do not react with water.
- No, not all do — correct. Yes!
- Yes, but only with steam. Some metals react with cold water, and lead, copper, silver and gold do not react at all.