ANALYSIS OF VAPOR-PRESSURE LOWERING OF SOLUTION CONCEPTS AS A BASIS FOR DEVELOPMENT OF VIRTUAL LABORATORY AND STUDENTS’ SCIENCE PROCESS SKILL IN LEARNING SOLUTION COLLIGATIVE PROPERTIES
Nenden Nataliawati1, Ijang Rohman2, dan Galuh Yuliani3 Chemistry Education Program, Graduate School, Indonesia University of Education (IUE) Indonesia 1Email: nenden.nataliawati17@gmail.com
ABSTRACT
The goal of this study was to analyze concept characteristics of the teaching material on vapor-pressure lowering of solution as the basis for development of virtual laboratory and students’ science process skill in learning colligative properties. The concept’s characteristics being analyed include concept definitions, concept attributes, and types of concepts. Concept analysis method used in this study was the concept analysis according to Herron. The sample of this study was the textbook of chemistry subject for senior high school (SMA) Curriculum 2013 which has been used in the school. The results of the concept analysis showed that there were seven concept labels, which are prerequisite concepts that must be mastered by students before studying vapor-pressure lowering of solution, and twelve concept labels, which are core concepts to build the concept of vapor-pressure lowering of solution. For the concept definition characteristics, found the concept definition that can improve students’ science process skills by 31.6%. This means that 68.4% of the definitions of concepts contained in high school textbook are only memorizing. For concept attributes, 100% attributes can be animated/simulated in a virtual laboratory viewed from the criteria of macroscopic, submicroscopic, and symbolic level visualization. For the concept type, 15.7% of concept labels was concrete concepts; 10.5% abstract concept; 31.6% concept based on principle; 5% concepts that name attributes and properties, and 36.8% concepts that describes attributes or properties. Science process skills that can be developed based on the results of concept analysis were the ability to observe, to calculate, to measure, to interpret, to seek relationships, to predict, and to apply.
Key Words: Concept Analysis, Vapor-Pressure Lowering of Solution, Virtual Laboratory, Science Process Skill
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