Published date: Apr 03 2024

Journal Title: KnE Social Sciences

Issue title: International Conference on Mathematics and Science Education (ICMScE 2022): Learning Materials and Modules

Pages: 291–298

DOI: 10.18502/kss.v9i8.15562

Dian MayangsariDepartment of Chemistry Education, Universitas Pendidikan IndonesiaJl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Nahadi .nahadi@upi.eduDepartment of Chemistry Education, Universitas Pendidikan IndonesiaJl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Harry FirmanDepartment of Chemistry Education, Universitas Pendidikan IndonesiaJl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

This study aimed to develop and validate virtual tests based on three levels of chemical representation that can measure students’ understanding of salt hydrolysis. This study used development and validation methods, which consisted of 4 phases. First, the determination of the purpose and the scope of the test. Second, the development and design of the test Third. The validation, selection of items and scoring guidelines. Lastly, the assembly and evaluation of the test. The instruments used were a content validation sheet for experts to judge and an interview sheet for students. The participants were 11th grade senior high school students from three different schools in Karawang with 60 total respondents, and six of them were interviewed. The results showed that the virtual test containing 33 multiple choice items was valid with the Content Validity Index (CVI) value for macroscopic, submicroscopic, and symbolic level items being 1. The Virtual test was also reliable, with Cronbach’s alpha value for macroscopic, submicroscopic, and symbolic level items, respectively, being 0.605, 0.614 and 0.644. The results of this research can be used to measure students’ understanding of hydrolysis of salt based on three-level chemical representation.

Keywords: virtual tests, chemical representation, salt hydrolysis

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