What Are Reversible Reactions?

The video tutorial explains the difference between irreversible and reversible reactions, using the combustion of magnesium and the thermal decomposition of ammonium chloride as examples. It provides a step-by-step guide to conducting an experiment with ammonium chloride, highlighting safety precautions. The tutorial clarifies why the decomposition of ammonium chloride is not a sublimation reaction, emphasizing the difference between phase changes and chemical reactions.

Explain why the thermal decomposition of ammonium chloride is sometimes incorrectly referred to as sublimation.

What distinguishes a phase change from a chemical reaction, based on the example of ammonium chloride?