copper oxide---> copper + oxygen
copper oxide
Copper oxide is a compound made up of copper and oxygen atoms. It is not considered a single atom itself, but rather a combination of atoms bonded together.
The coin was likely made of copper, which is an element commonly used for making coins. When heated, copper reacts with oxygen in the air to form copper oxide, which is a black compound.
You get a grey powder because magnesium is higher up in the reactivity series than Copper - (magnesium is more reactive than copper) therefore when you heat it up there is a displacement reaction. That grey powder is actully magnesium oxide and copper e.g Copper oxide + magnesium = magnesium oxide and copper.
When copper oxide reacts with hydrochloric acid, it forms copper chloride and water.
Copper (I) Oxide or Cuprous Oxide
When copper (ii) oxide is mixed with sulphuric acid it produces copper (ii) sulphate. CuO + H2SO4 = CuSO4 + H2O
Cuprous oxide or copper(I) oxide. This is copper in oxidation state '1'.
Copper sulfate is the salt formed when copper oxide and sulfuric acid react together.
CuO = Cupric Oxide Cupric = Cu2+ and is not Cu The correct answer would be CuO = Copper Monoxide Copper (II) oxide is the name of the compound CuO.
Copper reacts with oxygen in the air to form copper oxide. The most common form is black copper(II) oxide (CuO) which gives copper a black coating or tarnish.
Copper sulfate is formed when copper oxide reacts with sulfuric acid.