Here's what happens:

* Reactants: Copper(II) hydroxide (Cu(OH)₂) and heat

* Products: Copper(II) oxide (CuO) and water (H₂O)

Chemical Equation:

Cu(OH)₂(s) → CuO(s) + H₂O(g)

Explanation:

When copper(II) hydroxide is heated, it breaks down into its simpler components: copper(II) oxide and water. This is a classic example of a decomposition reaction, where a single compound breaks down into two or more simpler substances. The heat provides the energy needed to overcome the bonds holding the copper(II) hydroxide molecule together.

Key Points:

* The reaction is endothermic, meaning it absorbs heat from the surroundings.

* The water produced is in the gaseous state due to the heat.

* Copper(II) oxide is a black solid.