Abstract: Tartaric acid and its salts represent a class of chemically significant compounds that are ubiquitous in daily life. This public science initiative investigates the phenomenon of tartar crystallization in wine through a series of carefully designed experiments, including tartaric acid extraction, simulated potassium hydrogen tartrate precipitation, and demonstrations of potassium sodium tartrate’s piezoelectric applications. The project serves dual purposes: it educates the public about the harmless nature of wine crystals while revealing the scientific principles behind common observations, and introduces the tartaric acid family’s chemical properties and practical applications, thereby highlighting chemistry’s crucial role in both everyday life and scientific advancement. Featuring straightforward protocols, safe operations, and visually striking results, these experiments effectively illustrate both the aesthetic and functional dimensions of chemistry. Utilizing diverse presentation methods such as exhibition panels, instructional videos, and hands-on activities, the project offers tailored engagement strategies for different audiences, aiming to stimulate adolescents’ interest in chemical sciences and promote public scientific literacy.

Key words: Tartaric acid, Potassium hydrogen tartrate, Potassium sodium tartrate, Piezoelectric effect