Apply energy-change reasoning to reversible reactions such as hydrated copper sulfate.

In Energy changes and reversible reactions, this learning objective focuses on how to apply energy-change reasoning to reversible reactions such as hydrated copper sulfate. Within Reversible reactions and dynamic equilibrium, students should keep the idea anchored to Energy changes and reversible reactions rather than drifting into a different rate, equilibrium, catalyst, reversible reaction, or graph concept. Key terms to use include reversible reaction, hydrated copper sulfate. A strong AQA GCSE Chemistry answer names the exact factor or relationship, explains the particle or equilibrium reason where needed, and links the point back to the question wording with correct units or graph language when relevant.