Zain, M. H.; Suhaimi, M. S.; Mocktar, N. A.; Razali, R.; Azlan, N. A. S.; Zaki, M. M. M. DEVELOPMENT AND DELPHI-BASED CONTENT VALIDATION OF A CHEMISTRY LEARNING QUESTIONNAIRE: EVIDENCE FROM STEM FOUNDATION STUDENTS’ PERCEPTIONS, ATTITUDES, INTEREST, AND LEARNING CHALLENGES. IJMOE 2026, 8, 132-148.