Abstract: Solubility of inorganic substances is one of the difficulties in teaching and learning elemental chemistry. This article selects representative examples and provides a fundamental understanding of the solubility of inorganic substances by means of analyzing, comparing, and summarizing its influencing factors. And thus a cognitive model is constructed to facilitate learners’ understanding. Based on the knowledge carrier of “the solubility of inorganic substances”, this paper explores the application of the “knowledge construction” learning mode in elemental chemistry teaching.

Key words: Elemental chemistry, Solubility of inorganic substances, Knowledge construction, Cognitive model