When copper becomes copper oxide, it undergoes a chemical reaction in which it combines with oxygen to form copper oxide. The amount of copper left after this reaction depends on the stoichiometry of the reaction. In the case of copper(II) oxide, the chemical formula is CuO, indicating that one copper atom combines with one oxygen atom. Therefore, when copper becomes copper oxide, all of the original copper is still present, but it has combined with oxygen to form copper oxide. **

Copper is lighter than copper oxide. This is because copper oxide is a compound formed by the combination of copper and oxygen, which increases its overall mass compared to pure copper. Therefore, in terms of weight, copper is lighter than copper oxide. **

Collecting copper can be worth it as it is a valuable metal that can be sold for a profit. Copper can be found in various places such as old electronics, wiring, plumbing fixtures, and even in some household items like pots and pans. You can also find copper in scrap yards, construction sites, and even in abandoned buildings. Just be sure to check local regulations and laws regarding collecting scrap metal before you start. **

The chemical formula for copper oxide is CuO, for copper it is Cu, and for carbon dioxide it is CO2. Copper oxide is a compound formed by the combination of copper and oxygen, while copper is an element on its own. Carbon dioxide is a compound formed by the combination of carbon and oxygen. **

Ötzi, the ancient iceman, likely extracted copper from copper ore using a technique called smelting. This process involves heating the copper ore in a furnace at high temperatures to separate the copper from the surrounding rock and other impurities. Ötzi may have used a combination of charcoal and blowpipes to create the necessary heat for smelting. Once the copper was extracted, it could be shaped and used for making tools and weapons. This demonstrates Ötzi's advanced knowledge of metallurgy and his ability to work with metal during the Copper Age. **

To produce copper from copper oxide, you can use a process called reduction. This involves heating the copper oxide with a reducing agent such as carbon (in the form of charcoal or coke) in a furnace. The carbon will react with the oxygen in the copper oxide, leaving behind the pure copper metal. This process is known as smelting and has been used for centuries to extract copper from its ores. Once the copper metal is obtained, it can be further purified and shaped into the desired form. **

Copper is used in various products and applications because of its excellent electrical conductivity, corrosion resistance, and malleability. It is commonly used in electrical wiring, plumbing, and electronic devices due to its ability to efficiently conduct electricity and heat. Additionally, copper is often used in construction and architecture for its aesthetic appeal and durability. Its antimicrobial properties also make it suitable for use in healthcare settings and food preparation surfaces. Overall, copper's unique combination of properties makes it a versatile and valuable material for a wide range of applications. **

Yes, it can be worthwhile to collect copper as it is a valuable metal that is widely used in various industries. Copper can be found in various places such as old electronics, plumbing fixtures, electrical wires, and even in some rocks and minerals. You can also find copper in scrap yards, thrift stores, and online marketplaces where you can purchase or collect items containing copper. **