You are absolutely correct! Solid copper (Cu) reacts with solid sulfur (S) to form copper(I) sulfide (Cu₂S). Here's the balanced chemical equation:

2 Cu (s) + S (s) → Cu₂S (s)

Explanation:

* Reactants:

* Copper (Cu) is a reddish-brown metal.

* Sulfur (S) is a yellow non-metal.

* Product:

* Copper(I) sulfide (Cu₂S) is a black solid.

* Reaction:

* This is a synthesis reaction where two or more substances combine to form a single, more complex product.

* The reaction requires heating to initiate it.

* The copper atoms lose electrons to form Cu⁺ ions, while the sulfur atoms gain electrons to form S²⁻ ions. These ions then combine to form the ionic compound Cu₂S.

Let me know if you have any other chemistry questions!