1. Copper(I) sulfide (Cu₂S): This is a black, solid compound formed when copper reacts directly with sulfur.
2. Copper(II) sulfide (CuS): This is another black, solid compound formed when copper reacts with sulfur in the presence of oxygen.
3. Copper(I) oxide (Cu₂O): This is a red, solid compound formed when copper reacts with oxygen at high temperatures.
4. Copper(II) oxide (CuO): This is a black, solid compound formed when copper reacts with oxygen at lower temperatures.
5. Copper sulfate (CuSO₄): This is a blue, solid compound that is commonly used as a fungicide and algaecide. It is formed by reacting copper with sulfuric acid in the presence of oxygen.
6. Copper sulfates (CuSO₄·xH₂O): These are hydrated forms of copper sulfate with varying amounts of water molecules. They are also blue solids.
7. Copper oxychloride (Cu₂OCl₂): This is a green, solid compound used as a fungicide and algaecide. It is formed by reacting copper with chlorine in the presence of oxygen.
The specific compound formed will depend on the reaction conditions, such as temperature, pressure, and the presence of other reactants.
