Explanations (including important chemical equations): 2 Cu (s) + O 2 (g) ---> 2 CuO (s) CuO (s) + H 2 (g) ---> Cu (s) + H 2 O (g) Heated copper metal reacts with oxygen to form the black copper oxide. Now you have 1 copper and 2 oxygen atoms going to 1 copper and one oxygen atom. Take a look at this word equation for the reaction: In chemistry experiments, this reaction can be sparked by heating copper with a burner, turning the original copper black. Impurities: - copper sulfate. The two copper oxides that can form are ionic compounds. The balanced equation will appear above. Copper(II) forms a hexaqua complex with water. Copper oxidation, on the other hand, prevents further oxygen exposure and corrosion by solidly adhering to the metal's surface. The … Simply count up the number of each atom on each side of the equation and make sure the numbers on each side match (this approach works for any full chemical equation). Word equations are often easier to write than picture equations or chemical equations and so they are a good starting point when we want to write reactions. The black copper oxide that is produced can be restored to original copper color through a reaction with hydrogen. Use uppercase for the first character in the element and lowercase for the second character. Chalcocite: Chalcocite, a dark gray metallic crystal, is an industrially-important ore. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Cu + 1/2O2 ----> CuO Effects of Oxidation on Copper One positive effect of copper oxidation includes the formation of a protective outer layer that prevents further corrosion. The copper oxide can then react with the hydrogen gas to form the copper metal and water. Copper oxide is formed when copper reacts with oxygen. This violates the conservation of mass, so you can do one of two things. Copper sulfide react with oxygen to produce copper oxide and sulfur dioxide. Reaction of copper with water. Oxygen is an oxidizer and a reactant in combustion. Write the net chemical equation for the production of copper from copper(I) sulfide, oxygen and carbon. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. At read heat, copper metal and oxygen react to form Cu 2 O. This reaction takes place at a temperature of 300-500. When the funnel is removed, the copper turns black again. Reaction of copper with air. Copper metal is stable in air under normal conditions. Balanced symbol equations show what happens to the different atoms in reactions. When heated until red hot, copper metal and oxygen react to form Cu 2 O. Write the word equation for the reaction between iron and oxygen and for the reaction between magnesium and oxygen. 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