Profile of Mastery Atomic Structure Concepts in Class X Students of Public Senior High School 4 Palangka Raya Academic Year 2018/2019

  • Yulita Tasya Palangka Raya University
  • I Made Sadiana Palangka Raya University
  • Nopriawan Berkat Asi Palangka Raya University
Keywords: concept, mastery, profile, atomic structure

Abstract

Atomic structure is one of the chemistry subject matter taught in high school / MA. This material was studied in class X SMA about the development of atomic theory, the basic particles making up atoms, electron configurations, and quantum numbers. This concept is the basic concept of chemistry to understand chemical bonds. This study aims to describe the profile of the mastery of the concept of Atomic Structure in class X high school students. This research is a type of descriptive study carried out in SMA Negeri 4 Palangka Raya with 30 research subjects as Grade X MIPA-1 students. The data used in this study were in the form of the chemistry teacher's lesson plan, the student's concept mastery data obtained through the description test, and student interview data. The results showed 1) an average of 62.16% were in the medium category. 2) Students can explain the development of atomic theory to show the advantages and disadvantages of each atomic theory with an average mastery of the concept of 68.75% with the medium category. 3) Students can determine the elementary particles (protons, electrons, and neutrons) of an atom based on atomic number and mass number with an average mastery of concepts of 61.47% in the medium category. 4) Students can classify elements into isotopes, isobars, and isotope with an average mastery of concepts of 88.88% with a high category. 5) Students can determine quantum numbers in the outermost electrons of an element or ion with an average mastery of concepts of 21.04% in the low category.

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Author Biographies

Yulita Tasya, Palangka Raya University

Chemistry Education Study Program, Department of Mathematics and Natural Sciences, FKIP, University of Palangka Raya, Indonesia

I Made Sadiana, Palangka Raya University

Chemistry Education Study Program, Department of Mathematics and Natural Sciences, FKIP, University of Palangka Raya, Indonesia

Nopriawan Berkat Asi, Palangka Raya University

Chemistry Education Study Program, Department of Mathematics and Natural Sciences, FKIP, University of Palangka Raya, Indonesia

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Published
2020-03-12
How to Cite
[1]
Tasya, Y., Sadiana, I.M. and Asi, N.B. 2020. Profile of Mastery Atomic Structure Concepts in Class X Students of Public Senior High School 4 Palangka Raya Academic Year 2018/2019. Jurnal Ilmiah Kanderang Tingang. 11, 1 (Mar. 2020), 30-40. DOI:https://doi.org/10.37304/jikt.v11i1.70.