IDENTIFICATION OF HIGH SCHOOL STUDENTS' MISCONCEPTIONS OF STOICHIOMETRY MATERIAL USING THE THREE-TIER DIAGNOSTIC TEST (TTDT) INSTRUMENT

Ainun Laras Sati, Nurma Yunita Indriyanti, Sri Retno Dwi Ariani

Abstract

This study aims to determine the level of misconceptions in stoichiometry material and the profile of those experienced by grade X students at Surakarta City State High School. This research is descriptive qualitative research with sample selection based on purposive sampling techniques involving 196 grade X students at SMA Negeri 1 Surakarta, SMA Negeri 3 Surakarta, and SMA Negeri 4 Surakarta. The research data was obtained from the analysis of student answers on the Three-Tier Diagnostic Test (TTDT) instrument. Based on data analysis, as many as 30.76% of 196 students of SMA class X Science at SMA Negeri 1 Surakarta, SMA Negeri 3 Surakarta, SMA Negeri 4 Surakarta experienced misconceptions on stoichiometric material in different sub-topics. According to the results of students' answers, profile misconceptions occurred in the sub-topics of determining relative atomic mass and relative molecular mass (27.72%), determining the laws of gases correctly (21.94%), determining the relationship between moles, number of particles, molar mass, and molar volume in chemical equations (44.05%), determining empirical formulas and molecular formulas (25.00%), determining limiting reagents in chemical reactions (31.63%). The dominant misconception experienced by students is in the sub-topic of determining the relationship between moles, number of particles, molar mass, and molar volume as much as 44.05%.

Keywords

Misconcept, Stoichiometer, Three-Tier Diagnostic Test

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References

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DOI: https://doi.org/10.20961/jpkim.v13i1.65033

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