The rapid development of technology and information has influenced students' learning styles and has led to a shift in information seeking from printed books to e-books. This study aims to measure students' knowledge and skills, attitude, and website knowledge competency on the ionic liquid material. The study involved 47 students of the Diploma III Chemical Engineering program at a private polytechnic selected using a purposive sampling technique. This web-based Ionic Liquids learning was tested on students through the experiential learning model. Data collection was carried out by completing the competency test at the beginning (CT1) and the end of learning (CT2). The results revealed that website-based ionic liquid learning increased each competency of knowledge and skills of ionic liquids, knowledge of websites, and attitude. Even though not all students can do it independently, the learning could attract students' attention. The learning has to be combined with lecturers' explanations as reinforcing concepts. This research's implications are expected to be used as recommendations in enriching the Chemical Engineering education curriculum by adding website-based ionic liquid material.