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All Journal International Journal of Evaluation and Research in Education (IJERE) SAINSMAT Jurnal Pendidikan Ekonomi (JUPE) Jurnal Pendidikan Sains Jurnal Pendidikan IPA Indonesia Jurnal Inovasi Pendidikan Kimia Tadris: Jurnal keguruan dan Ilmu Tarbiyah Jurnal Inovasi Pendidikan IPA Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Indonesian Journal of Chemistry Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jambura Journal of Educational Chemistry JCER (Journal of Chemistry Education Research) Acta Chimica Asiana Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Journal of Community Practice and Social Welfare (JaCiPS) Jurnal Pijar MIPA SAINSMAT: Jurnal Ilmiah Ilmu Pengetahuan Alam PREVENIRE: Journal of Multidisciplinary Science Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Innovation for Community Service Journal Jurnal Pendidikan MIPA Maharsi : Jurnal Pendidikan Sejarah dan Sosiologi

Yahmin Yahmin

Universitas Negeri Malang

Author-ID : 3008414

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Chemical Literacy of First Year Students on Carbon Chemistry Nursida Djaen; Sri Rahayu; Yahmin Yahmin; Muntholib Muntholib
J-PEK (Jurnal Pembelajaran Kimia) Vol 6, No 1 (2021): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v6i12021p041

This research aims to develop and validate chemical literacy test instruments on competency and knowledge aspects and to measure the chemical literacy of first-year science education students. Instrument development involved expert consultation, expert judgment, and testing of 114 first-year students majoring in chemistry for the analysis of item validity and instrument reliability. The instrument was developed using the Research& Development model by Borg and Gall (1989). The developed instrument consisted of 30 valid item items with Cronbach's Alpha reliability coefficient of 0.718. The analysis was carried out on 28 first-year students of the Jember State University Science Education Study Program who had studied carbon chemistry. Data analysis showed that the average score of students' chemical literacy was 59.7 in the moderate category.ReferencesAdawiyah, R., & Wisudawati, A. (2017). Pengembangan instrumen tes berbasis literasi sains. Indonesian Journal of Curriculum and Educational Technology Studies, 5(2), 112–121.Akengin, H., & Sirin, A. (2013). A comparative study upon determination of scientific literacy level of teacher candidates. Educational Research and Reviews, 8(19), 1882–1886.Arikunto, S. (2012). Dasar-dasar evaluasi pendidikan edisi 2. Jakarta: Bumi Aksara.Assessment, P. for I. S., & service), S. (Online. (2006). Assessing scientific, reading and mathematical literacy: A framework for PISA 2006. Publications de l’OCDE.Barnea, N., Dori, Y. J., & Hofstein, A. (2010). Development and implementation of inquiry-based and computerized-based laboratories: Reforming high school chemistry in Israel. Chemistry Education Research and Practice, 11(3), 218–228.Bybee, R. W. (1997). Achieving scientific literacy: From purposes to practices. ERIC.Celik, S. (2014). Chemical literacy levels of science and mathematics teacher candidates. Australian Journal of Teacher Education, 39(1), 1.Cigdemoglu, C., Arslan, H. O., & Cam, A. (2017). Argumentation to foster pre-service science teachers’ knowledge, competency, and attitude on the domains of chemical literacy of acids and bases. Chemistry Education Research and Practice, 18(2), 288–303.Cigdemoglu, Ceyhan, & Geban, O. (2015). Improving students’ chemical literacy levels on thermochemical and thermodynamics concepts through a context-based approach. Chemistry Education Research and Practice, 16(2), 302–317.De Ovira, E. (2018). PENGEMBANGAN DAN VALIDASI TES KIMIA DENGAN FRAMEWORK PISA PADA MATERI KELAS XI SEMESTER 1. Menara Ilmu, 12(80).DeBoer, G. E. (2000). Scientific literacy: Another look at its historical and contemporary meanings and its relationship to science education reform. Journal of Research in Science Teaching: The Official Journal of the National Association for Research in Science Teaching, 37(6), 582–601.Duschl, R. A., & Osborne, J. (2002). Supporting and promoting argumentation discourse in science education.Gall, M. D., & Borg, W. R. (1989). Educational Research. A Guide for Preparing a Thesis or Dissertation Proposal in Education. ERIC.Gerlach, K., Trate, J., Blecking, A., Geissinger, P., & Murphy, K. (2014). Valid and reliable assessments to measure scale literacy of students in introductory college chemistry courses. Journal of Chemical Education, 91(10), 1538–1545.Gurel, D. K., Eryilmaz, A., & McDermott, L. C. (2015). A review and comparison of diagnostic instruments to identify students’ misconceptions in science. Eurasia Journal of Mathematics, Science and Technology Education, 11(5), 989–1008.Impey, C. (2013). Science literacy of undergraduates in the united states. Organizations, people and strategies in astronomy, 2(2), 353–364.Kemendikbud, R. I. (2014). Permendikbud No. 49 Tahun 2014 tentang Standar Nasional Pendidikan Tinggi. Jakarta: Kemendikbud.Laugksch, R. C., & Spargo, P. E. (1996). Development of a pool of scientific literacy test-items based on selected AAAS literacy goals. Science Education, 80(2), 121–143.Miller, J. D. (1983). Scientific literacy: A conceptual and empirical review. Daedalus, 29–48.Muntholib, M., Ibnu, S., Rahayu, S., Fajaroh, F., Kusairi, S., & Kuswandi, B. (2020). Chemical Literacy: Performance of First Year Chemistry Students on Chemical Kinetics. Indonesian Journal of Chemistry.Norris, S. P., & Phillips, L. M. (2003). How literacy in its fundamental sense is central to scientific literacy. Science education, 87(2), 224–240.Norris, S. P., & Phillips, L. M. (2009). Scientific literacy. The Cambridge handbook of literacy, 271–285.OECD, F. (2016). FDI in Figures. Organisation for European Economic Cooperation Paris.OECD, P. (2015). Assessment and analytical framework: Science. Reading, Mathematic and Financial Literacy,(Interscience: Paris, 2016), 24–25.Osborne, J., & Dillon, J. (2008). Science education in Europe: Critical reflections (Vol. 13). London: The Nuffield Foundation.Permendikbud, R. I. (t.t.). Nomor 59 tahun 2014 Tentang Kurikulum 2013 Sekolah Menengah Atas. Madrasah Aliyah, Jakarta: Depdikbud.Rahayu, S. (2017). Mengoptimalkan aspek literasi dalam pembelajaran kimia abad 21. Prosiding Seminar Nasional Kimia UNY, 319–324.Rifal, M., & Rauf, W. (2018). Analisis Penggunaan Bahan Bakar Etanol-Pertalite Pada Motor Honda Scoopy 110 cc. Gorontalo Journal of Infrastructure and Science Engineering, 1(1), 55–64.Shwartz, Y., Ben-Zvi, R., & Hofstein, A. (2006). The use of scientific literacy taxonomy for assessing the development of chemical literacy among high-school students. Chemistry Education Research and Practice, 7(4), 203–225.Sumarni, W., Supardi, K. I., & Widiarti, N. (2018). Development of assessment instruments to measure critical thinking skills. IOP Conference Series: Materials Science and Engineering, 349(1), 012066.Sunarti, T. (2015). Pemahaman literasi sains mahasiswa calon guru fisika Universitas Negeri Surabaya. Seminar Nasional Fisika dan Pembelajarannya, 2015, 34–39.Tarhan, L., & Sesen, B. A. (2010). Investigation the effectiveness of laboratory works related to “acids and bases” on learning achievements and attitudes toward laboratory. Procedia-Social and Behavioral Sciences, 2(2), 2631–2636.Thummathong, R., & Thathong, K. (2018). Chemical literacy levels of engineering students in Northeastern Thailand. Kasetsart Journal of Social Sciences, 39(3), 478–487.Traiwichitkhun, D., & Wongwanich, S. (2014). Causal Model of Research Competency via Scientific Literacy of Teacher and Student Lertporn Udompong. Procedia-Social and Behavioral Sciences, 116, 1581–1586.Turiman, P., Omar, J., Daud, A. M., & Osman, K. (2012). Fostering the 21st century skills through scientific literacy and science process skills. Procedia-Social and Behavioral Sciences, 59, 110–116.

IDENTIFIKASI KESULITAN PESERTA DIDIK DALAM MEMAHAMI KESETIMBANGAN KIMIA Aninda Indriani; Ida Bagus Suryadharma; Yahmin Yahmin
J-PEK (Jurnal Pembelajaran Kimia) Vol 2, No 1 (2017): J-PEK (Jurnal Pembelajaran Kimia)
Publisher : Universitas Negeri Malang

Berbagai survei menunjukkan bahwa pemahaman peserta didik terhadap kesetimbangan kimia masih rendah. Hal ini menyebabkan peserta didik mengalami kesulitan dalam memahami materi kimia yang membutuhkan pengetahuan prasyarat kesetimbangan kimia. Tujuan penelitian adalah untuk mengetahui kesulitan peserta didik dalam memahami kesetimbangan kimia dan mengetahui konsep kesetimbangan kimia yang sulit dipahami oleh peserta didik. Penelitian ini menggunakan rancangan penelitian deskriptif. Pengambilan data dilakukan menggunakan instrumen tes tertulis yang terdiri atas 26 soal pilihan ganda dengan alasan terbuka. Hasil penelitian menunjukkan bahwa kesulitan peserta didik dalam memahami konsep kesetimbangan dinamis tergolong tinggi, konstanta kesetimbangan tergolong rendah, dan faktor-faktor yang mempengaruhi pergeseran kesetimbangan tergolong rendah. Konsep kesetimbangan kimia yang paling sulit dipahami oleh peserta didik adalah kesetimbangan dinamis dan konstanta kesetimbangan.

Analysis of chemistry teachers' covalent bond conceptual understanding through diagnostic interview technique Muntholib Muntholib; Mashfufatul Ilmah; Yahmin Yahmin
J-PEK (Jurnal Pembelajaran Kimia) Vol 5, No 2 (2020): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v5i22020p108

Conceptual understanding of the subject matter is crucial for teachers in conducting instruction. The covalent bond is one of the essential knowledge of chemistry. This knowledge underlies most of the chemistry body knowledge. The purpose of this study is to investigate the chemistry teachers' conceptual understanding of covalent bonds. This study applied a descriptive qualitative research design. The research subjects were eight chemistry teachers from different schools. Data collection was carried out using a diagnostic interview technique guided by the semi-structured interview protocol. Data analysis was performed using phenomenography techniques. The results show that 25.00% of the interviewees well understood the covalent bond concepts, 22.75% do not understand, and 52.25% have misconceptions. Chemistry teachers have misconceptions about the concepts of intents of atom forming bonds, coordination bonds, types of atoms that form covalent bonds, polar and nonpolar covalent bonds, the level of covalent bonds polarity, Lewis structure writing, and covalent bond length.

KAJIAN PUSTAKA: INTEGRASI STEM UNTUK KETERAMPILAN ARGUMENTASI DALAM PEMBELAJARAN SAINS Astrid Kinantya Paramita; I Wayan Dasna; Yahmin Yahmin
J-PEK (Jurnal Pembelajaran Kimia) Vol 4, No 2 (2019): J-PEK (JURNAL PEMBELAJARAN KIMIA)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um026v4i22019p092

Abstrak: Peningkatan kualitas pembelajaran dengan menerapkan pembelajaran STEM sebagai suatu pendekatan preventif diharapkan mampu membantu siswa memaknai pembelajaran khususnya sains sehingga berimbas pada peningkatan keterampilan argumentasi. Pendekatan STEM disajikan sebagai jawaban atas tuntutan kebutuhan generasi berkualifikasi tinggi yang terfokus pada integrasi dari sains, teknologi, engineering dan matematika. Pengintegrasian STEM yang berkaitan dengan masalah kontekstual dianggap saling mendukung dengan pembelajaran sains yang memiliki relevansi dengan kehidupan. Namun dalam penerapannya, ditemukan variasi terkait pandangan tentang peran berbagai disiplin ilmu dalam pengintegrasian STEM. Hasil dari kajian literatur ini diharapkan berkontribusi pada rekomendasi penerapan pendekatan STEM dalam pembelajaran termasuk pada kebebasan untuk memahami dan menerapkan STEM di kelas bergantung pada kapasitas, kebutuhan, atau kenyamanan oleh guru maupun siswa.

Skrining Turunan Flavonoid Sebagai Kandidat Inhibitor Protease nsP2 dari Virus Chikungunya Menggunakan Molecular Docking Yahmin Yahmin; Khoirul Faqih; Suharti Suharti
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 3, No 1 (2019)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Penelitian ini bertujuan mendapatkan senyawa turunan flavonoid yang berpotensi sebagai inhibitor protease nsP2 dari virus chikungunya (CHIKV) dengan metode molecular docking serta mengkaji interaksi senyawa turunan flavonoid hasil skrining. Hasil penelitian menunjukkan bahwa setelah melalui proses molecular docking menggunakan software PyRx 0.8, senyawa turunan flavonoid yang berpotensi sebagai inhibitor dari enam kelompok flavonoid, yaitu hesperidin, rhoifolin, myricetin, genistin, peonidin, phlorizin yang mempunyai nilai root means square deviation (RMSD) senilai 0Å dengan nilai binding affinity berturut-turut -9,4; -8,5; -8,1; -7,9; -7,6; dan -6,9 kkal/mol. Hasil visualisasi molekul secara umum menunjukkan terjadinya interaksi hidrofobik dan terbentuknya ikatan hidrogen.

Pengaruh Komposisi SiO2/Al2O3 dalam Sintesis ZSM-5 (Zeolite Socony Mobile-5) Bersumber Silika Pasir Pantai Lokal Sumari Sumari; Suryani Indah Permatasari; Lailatul Ilmiyah; Fauziatul Fajaroh; Yahmin yahmin; Ida Bagus Suryadharma
JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Vol 4, No 2 (2020)
Publisher : State University of Malang or Universitas Negeri Malang (UM)

Pasir pantai di Indonesia memiliki kandungan silika yang tinggi berupa SiO2. Silika dengan kemurnian tinggi dapat digunakan sebagai bahan dasar sintesis zeolit, salah satunya adalah ZSM-5 (Zeolite Socony Mobile-5). Zeolit jenisZSM-5 (Zeolite Socony Mobile-5) dapat digunakan sebagai katalis yang memiliki keunggulan dalam struktur dan ketahanan terhadap suhu. Oleh karena itu, ZSM-5 (Zeolite Socony Mobile-5) memiliki harga yang mahal sehingga apabila dilakukan sintesis sendiri sangat menguntungkan. Tujuan penelitian yaitu mengetahui pengaruh komposisi SiO2/Al2O3 dalam sintesis ZSM-5 dari silika pasir pantai. Metode penelitian terdiri 3 tahapan: (1) pemurnian pasir pantai, (2) ekstraksi silika, dan (3) sintesis ZSM-5. Hasil yang diperoleh: (1) kemurnian silika sebesar 97,2%, (2) komposisi Si87Al9 memberikan hasil yang lebih baik dibandingkan Si89Al7 dibuktikan dengan terbentukknya 12 puncak ZSM-5 hasil uji XRD.

ANALISIS MODEL MENTAL MAHASISWA PENDIDIKAN KIMIA DALAM MEMAHAMI BERBAGAI JENIS REAKSI KIMIA Supriadi Supriadi; Suhadi Ibnu; Yahmin Yahmin
Jurnal Pijar Mipa Vol. 13 No. 1 (2018): MARET
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Tujuan dari penelitian ini adalah untuk menggali model mental mahasiswa dalam memahami berbagai jenis reaksi kimia berdasarkan perbedaan pengetahuan awal. Sampel terdiri dari 152 mahasiswa yang berasal dari semester 1,3, dan 5 Program Studi Pendidikan Kimia Universitas Mataram. Desain penelitian yang digunakan dalam penelitian ini adalah desain penelitian kualitatif deskriptif. Sebanyak 10 item soal tes essay dikembangkan tentang topik reaksi pembentukan, reaksi penguraian, reaksi pembakaran, reaksi substitusi tunggal dan reaksi substitusi ganda untuk mengidentifikasi model mental mahasiswa dan 19 soal tes pilihan ganda untuk mengidentifikasi pengetahuan awal mahasiswa. Hasil penelitian menunjukkan bahwa sebanyak 74,3 % mahasiswa masih mengembangkan model mental inisial dalam menjelaskan fenomena reaksi pada level submikroskopik dan belum ada mahasiswa yang mengembangkan model mental saintifik. Mereka hanya menjelaskan proses terjadinya reaksi kimia pada level makroskopik dan simbolik. Selain itu dalam model mental mahasiswa, masih terdapat pra konsep yang dapat menyebabkan miskonsepsi. Peneliti menyarankan bahwa perlu diterapkan pembelajaran yang berbasis multi level representasi dan perlu dikembangkan media pembelajaran yang dapat meningkatkan model mental mahasiswa karena pengembangan model mental sangat penting dalam memahami konsep-konsep kimia.

THEORETICAL STUDY ON 15-CROWN-5 COMPLEX WITH SOME METAL CATIONS Yahmin Yahmin; Harno Dwi Pranowo; Ria Armunanto
Indonesian Journal of Chemistry Vol 12, No 2 (2012)
Publisher : Universitas Gadjah Mada

The capability of 15-crown-5 ethers to form complexes with some metal cations (Li+, Na+, K+, Zn2+, Cd2+ and Hg2+) was investigated by an ab initio quantum mechanical method. The calculations were performed at the RHF/lanl2mb level of theory. The interaction energies were used to evaluate the metal binding capability of the crown ether. The effect of nature of the metal on the binding properties was also studied. The results of the calculations showed that the interaction energy of the complexes increased in proportion with the ratio of ion charge, electronegativity and ionization potential to the cation diameter. In addition, based on the extraction distribution coefficient in the gas phase, it is found that the 15-crown-5 could not extract metal cations investigated.

AB INITIO INVESTIGATION OF 12-CROWN-4 AND BENZO-12-CROWN-4 COMPLEXES WITH Li+, Na+, K+, Zn2+, Cd2+, AND Hg2+ Yahmin Yahmin; Harno Dwi Pranowo; Ria Armunanto
Indonesian Journal of Chemistry Vol 10, No 1 (2010)
Publisher : Universitas Gadjah Mada

The structure and binding energies of 12-crown-4 and benzo-12-crown-4 complexes with Li+, Na+, K+, Zn2+, Cd2+, and Hg2+were investigated with ab initio calculations using Hartree-Fock approximation and second-order perturbation theory. The basis set used in this study is lanl2mb. The structure optimization of cation-crown ether complexes was evaluated at HF/lanl2mb level of theory and interaction energy of the corresponding complexes was calculated at MP2/lanl2mb level of theory (MP2/lanl2mb//HF/lanl2mb). Interactions of the crown ethers and the cations were discussed in term of the structure parameter of crown ether. The binding energies of the complexes show that all complex formed from transition metal cations is more stable than the complexes formed from alkali metal cations.

Corrosion Inhibition Efficiency Of Nicotine Based On Quantum Chemical Study Yayuk Wirayani; Maria Ulfa; Yahmin Yahmin
Acta Chimica Asiana Vol. 1 No. 2 (2018)
Publisher : Chemistry Education Program, the University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v1i2.29

The effect of substituents, electron donor groups (NH2, OH, CH2OH and CH3) and electron withdrawal groups (NO2, COOH, and Cl), to the efficiency of corrosion inhibition of nicotine has been studied using theoretical studies. The effect of substituents toward the efficiency of corrosion inhibition of nicotine based on quantum parameters (EHOMO, ELUMO, Egap, I, Ï‡, dan Î”N). The efficiency of corrosion inhibition based on quantum parameters is NH2 > OH > CH2OH > CH3 > BN > Cl > COOH > NO2. The addition of electron donor group NH2 has the highest inhibitory efficiency of 99.79 %. In contrast, the presence of electron withdrawal group NO2 has the opposite effect.

Co-Authors A. Cahyarini, A. Adilah Aliyatulmuna Ahmad Munjin Nasih Akmal, Bernada Uni Tatya Alsulami, Naif Mastoor Amaliah, Nor Aman Santoso Amry, Urwatil Wutsqo Aninda Indriani Anisyah Dasa Astarina Ardianty, Annida Elfiana Citra Ardyansyah, Ananta Astrid Kinantya Paramita Astrid Kinantya Paramita Ciptawati, Endang Deni Ainur Rokhim Dewi, Ratna Kumala DWI SURYANTO Edy, Duwi Leksono Eli Hendrik Sanjaya Eli Khusmawardani Endang Budiasih Fauziatul Fajaroh Firmasyah, Defan Habiddin Halimah Mustika Nurhayati Harno Dwi Pranowo Hasanah, Samudra Mutiara Hayuni Retno Widarti Herunata Herunata I Wayan Dasna Ida Bagus Suryadharma Illahi, Vella Aulia Imam Alfianto Indasari, Krisma Dewi Firdaus Khoirul Faqih Khusmawardani, Eli Kurnia, Eva Lailatul Ilmiyah Laili Mei Sulistiyani Maria Ulfa Mashfufatul Ilmah Meronda, Devi Apriana Mohd Shafie Rosli Muhammad Muchson Muhammad Syaiful Hadi Muntholib Munzil Nazriati Nazriati dkk. Nuril Mega Musfita Nursida Djaen Oktavia Sulistina Parlan . Permatasari, Margaretha Bhrizda Rahayu*, Sri Rena Amelia Ria Armunanto Rosida, Nuchrurita Rosli, Mohd Shafie Rosyida, Ima S. Rahayu, S. Silvia, Debora SRI RAHAYU Sri Rahayu Suhadi Ibnu Suhadi Ibnu Suharti Suharti Sumari Sumari Supriadi Supriadi Suryani Indah Permatasari Yayuk Wirayani Zahirah, Dhea Fairuza

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