<p>Este estudio tuvo como objetivo descubrir la comprensión científica y no científica de los estudiantes sobre el tema de las propiedades ácido-base de la solución salina. Este estudio descriptivo involucró a 300 estudiantes de tres escuelas secundarias públicas en Malang, Java Oriental, Indonesia. El instrumento de cuatro niveles en el tema desarrollado y considerado válido de nuestro trabajo anterior se utilizó para la recopilación de datos. Se encuentra que la comprensión científica de algunos conceptos por parte de los estudiantes es sólida. Sin embargo, también se descubrieron algunos conocimientos no científicos. También se discute la implicación para la enseñanza del tema.</p>
This paper outlines the development and validation of a Four-tier instrument in the topic of salt hydrolysis (FTISH). The instrument was developed by using the procedure of FTDICK instrument as published by Habiddin & Page (2019). This study was a part of other separates studies conducted by other groups of researchers including Devita, Habiddin & Suaidy (2019) (in press). This study involved 127 students in total and data collection were carried out two times involving 64 students in the first data collection and 63 students in the second one. The participants of both groups were public secondary school students from Malang. The FTISH consists of 23 questions. The results show that the validity of the questions ranged between 0.263 and 0.745. The reliability of the instrument was 0.80 and falls in the high category. The future implementation of the instrument to support the teaching and learning of salt hydrolysis are also discussed.
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