Yes it turns green
Yes, copper can react with oxygen to form copper oxide. This reaction typically results in a layer of black copper oxide forming on the surface of the copper.
oxygen
It forms copper oxide
Copper reacts with oxygen in the air to form copper oxide.
Copper can also react with sulfur, chlorine, and acids to form different compounds.
Aluminium is more reactive than copper. Aluminium can react with oxygen in the air to form a protective oxide layer, while copper does not readily react with oxygen.
Copper plus oxygen react to form copper oxide. This reaction can be represented by the chemical equation: 4Cu + O2 → 2Cu2O.
Yes, it rapidly forms a layer of blue green copper oxide on the copper surface.
Copper can also react with acids, such as hydrochloric acid or sulfuric acid, to form copper salts and hydrogen gas. Additionally, copper can react with certain gases, like sulfur dioxide, to form copper sulfide.
Yes, copper is more reactive than carbon. Copper can react with acids to form copper salts and with oxygen in the air to form copper oxide, while carbon is relatively unreactive and does not readily react with acids or oxygen at room temperature.
The amount of oxygen reacting with copper can be determined by the reaction stoichiometry. For example, in the reaction of copper with oxygen to form copper oxide, two moles of oxygen react with one mole of copper. From the given amount of copper and assuming all the copper reacted to form copper oxide, you can calculate the corresponding amount of oxygen that reacted with the copper.
Copper can react with other elements, such as oxygen, sulfur, and chloride to form an ore, copper oxide (CuO); tarnish, copper sulfide (CuS); and the salt, copper chloride (CuCl2) used in many chemistry labs.