The Calcium Radical experiment focuses on detecting calcium ions in inorganic salts through systematic qualitative analysis. Students perform physical observation, solubility assessment, and chemical tests such as ammonium carbonate, calcium sulfate, potassium chromate, and flame tests. These procedures help confirm calcium as a fifth-group cation. By the end, learners can differentiate calcium from other cations, classify salts based on base radicals, and select suitable reagents for detection. The experiment also strengthens understanding of calcium’s properties, reactions, and real-world applications, while improving skills in balancing chemical equations and conducting accurate laboratory identification tests.