question archive Compare the original copper metal with the material obtained after heating the copper
Compare the original copper metal with the material obtained after heating the copper
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Compare the original copper metal with the material obtained after heating the copper.
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- As it is heated, a layer of black copper oxide will form, thus changing its color. Copper changes colors because of surface oxidation. Heated copper metal reacts with oxygen to form the black copper oxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water.
- NO COLOR CHANGE WITH UNHEATED COPPER. When dilute sulfuric acid poured on a copper plate, the metal does not react with sulfuric acid. But when concentrated sulfuric acid is poured over the copper plate, it liberates hydrogen gas. When heated Copper(II) oxide, a black solid, and colorless dilute sulfuric acid react to produce copper(II) sulfate, giving a characteristic blue color to the solution.
- NO they dont have the same physical and chemical properties. When a substance undergoes a chemical reaction/chemical change the original compound/molecule is converted into a another molecule producing a new product. In this case copper metal is converted into a black material copper (II) oxide which has different set of physical and chemical properties with the original molecule.
