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All Journal Gema Pendidikan Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemical Analysis (IJCA) Didaktik : Jurnal Ilmiah PGSD STKIP Subang Hydrogen: Jurnal Kependidikan Kimia STRATEGY : Jurnal Inovasi Strategi dan Model Pembelajaran Science and Education Journal Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo

Rustam Musta -

Universita Halu Oleo

Author-ID : 3304191

Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Social Sciences Other

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PENINGKATAN HASIL BELAJAR KIMIA UNSUR MELALUI PENERAPAN LESSON STUDY BERBASIS KOOPERATIF JIGSAW PADA MAHASISWA PENDIDIKAN KIMIA FKIP UHO Aceng Haetami -; La Rudi -; Rustam Musta -
Gema Pendidikan Vol 23, No 1 (2016): JURNAL GEMA PENDIDIKAN VOLUME 23 NO 1 TAHUN 2016
Publisher : Universitas Halu Oleo

Motivasi dan aktivitas belajar mahasiswa dalam pembelajaran kimia unsur sangat rendah. Hal ini berimbas pada rendahnya rerata hasil belajar mahasiswa dari tahun ke tahun yang selalu <61. Penerapan Lesson Study berbasis model pembelajaran kooperatif tipe Jigsaw diharapkan mampu meningkatkan motivasi dan aktivitas belajar mahasiswa sehingga hasil belajar kimia unsur meningkat. Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar mahasiswa melalui implementasi Lesson Study berbasis model pembelajaran kooperatif tipe Jigsaw pada pokok bahasan kimia unsur. Penelitian ini dilaksanakan dalam tiga Open Class, masing-masing Open Class terdiri dari tiga tahapaan utama : Plan, Do, See. Subyek penelitian ini adalah mahasiswa pendidikan kimia FKIP UHO angkatan 2014 yang berjumlah 72 orang. Teknik pengumpulan data dalam penelitian ini menggunakan lembar observasi dan tes essay. Berdasarkan analisis data hasil penelitian, persentase aktivitas belajar mahasiswa mengalami peningkatan dari Open Class I ke Open Class II yakni sebesar 15,83% dan dari Open Class II ke Open Class III meningkat sebesar 11,67%. Hasil belajar mahasiswa berkisar 41,67-92,00 dengan rerata 67,33, dimana sebanyak 57 atau 79,17% mahasiswa memiliki nilai ≥ 61 dan 15 atau 20,83 % mahasiswa memiliki nilai ≤ 61. Dengan demikian, dapat disimpulkan bahwa penerapan Lesson Study berbasis model pembelajaran kooperatif tipe Jigsaw dapat meningkatkan aktivitas dan hasil belajar kimia unsur pada mahasiswa Pendidikan Kimia FKIP UHO. Kata kunci: hasil belajar kimia, lesson study, kooperatif Jigsaw

Identifikasi Senyawa Penyusun Produk Cair Hasil Pirolisis Aspal Alam dari Lawele Kabupaten Buton Rustam Musta; Muh. Siddik Ibrahim; Laily Nurliana
Hydrogen: Jurnal Kependidikan Kimia Vol 9, No 1 (2021): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Identification of Liquid Product Compounds from Natural Asphalt Pyrolysis from Lawele, Buton Regency has been carried out. This research is intended toidentify the content of the compounds contained in the liquid fraction from the pyrolysis of Lawele's natural asphalt. This is a research experimentwith natural asphalt material was simply pyrolyzed at a temperature of 350oC with a little vacuum. The resulting liquid products were analyzed using the GC-MS instrument and analysis showed that there were 24 compounds contained in the liquid fraction resulting from the pyrolysis of Lawele asphalt with 2 main components, namely Phenol (C6H6O) of 16.45% and acetic acid (C2H4O2) of 12.47%. Another important product is alkane derivatives, namely Undekane (C11H24) and cyclo-octene (C8H14) which can be used as fuel.

Uji Aktivitas Antibakteri Staphylococcus aureus dan Salmonella typhi dari Hasil Mikroenkapsulasi Minyak Atsiri Rogo (Premna Serratifolia Linn) Nursin Nursin; Laily Nurliana; Imran Imran; Rustam Musta
Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 2 (2019): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika

Antibacterial activity test Staphylococcus aureus and Salmonella typhihas been performed by microencapsulation product of rogo essential oil (Premnaserratifolia Linn). This study aims to determine rogo oil activity test and microencapsulation results as antibacterial S. aureus and S. typhi. The results of antibacterial activity of rogo liquid oil to S. aureus and S. Typhi bacteria showed different inhibitory power of each concentration variation of 12.5%, 25%, 50% and 100% with 100% concentration as the best inhibitor for both bacteria. While the antibacterial activity test of S. aureus and S. typhi from microencapsulated rogo oil: maltodextrin showed the difference of each variation of concentration 1:10; 1:12; 1:14; 1:16 and 1:18 with a 1:14 composition of S. aureus and 1:18 in S. typhi as the best ratio of activity power. The antibacterial activity test between liquid rogo oil and microencapsulated result shows the difference, but it can be concluded that the inhibitory power of rogo oil from microencapsulation is more inhibited than 100% rogo oil.

Pengaruh Penambahan Tepung Tapioka Pada Pati Ubi Kayu (Manihot esculenta) Terhadap Pembuatan Plastik Biodegradable dan Karakterisasinya Abdul Rahim; Rustam Musta
Indonesian Journal of Chemical Analysis (IJCA) Vol. 2 No. 2 (2019): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol2.iss2.art4

Research on Biodegradable Plastic Characterization of Cassava Wastes (manihot esculenta) Substitution of Tapioca Flour. As Biodegradable Plastics Base Material. This study aims to determine the ratio of cassava starch to tapioca starch which produces the best biodegradable plastic which is then used for testing the physical and mechanical properties of biodegradable plastic film using 5% acetic acid. Comparison of cassava starch with tapioca flour used is 1 : 1; 1 : 1,5; 1 : 2; 1 : 2,5; 1 : 3. The best plastics are obtained by comparison of cassava starch with tapioca flour is 1 : 3. The characteristics of biodegradable plastics include physical characteristics consisting of thickness with value 0,273 mm, 0,286 mm, 0,413 mm, 0,280 mm, dan 0,510 mm. While the mechanical characteristics consist of tensile strength with value 0,22138 MPa, 2,10724 MPa, 0,78896 MPa, 3,25933 Mpa, dan 0,508 Mpa. Percent lengthening with value 42%, 32,8%, 55,6%, 20%, dan 31,6%. Based on the result of research, it can be concluded that the value of thickness, percent elongation, and tensile strength are influenced by the comparative formula used.Keywords: Biodegradable plastic, physical properties, mechanics, cassava starch, tapioca flour

Aplikasi dan Tinjauan Kinetika Hasil Fraksinasi Produk Pirolisis Cangkang Biji Jambu Mete Uji sebagai Antijamur Candida albicans Ustamuni Ustamuni; Laily Nurliana; Rustam Musta
Indonesian Journal of Chemical Analysis (IJCA) Vol. 2 No. 2 (2019): Indonesian Journal of Chemical Analysis
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijca.vol2.iss2.art1

Research on application and kinetics study of fractionation pyrolysis product from cashew nut shell as antifungal of Candida albicans has been carried out. This study aims to determine the constituent compounds, antifungal activity and chemical kinetics including order and rate constants antifungal activity C. albicans from fractional distillation results of cashew nut shell pyrolysis products. Cashew nuts were hydrolyzed and purified using a fractional distillation device. The results of the antifungal activity test C. albicans from fractional distillation results of cashew nut shell pyrolysis products showed that the inhibitory power varied from each concentration variation of 12.5%, 25%, 50%, 75%, and 100%. The concentration of 100% was the highest inhibitory characterized by the formation of a clear zone of 18.23 mm which indicates that the inhibitory force is a strong category. The clear zone that has been formed was calculated in terms of its chemical kinetics including the reaction order and the activity rate constant. The reaction order of antifungals C. albicans from the results of fractional distillation of cashew nut shell pyrolysis products is 0.15 with a constant activity rate of 8.74.

PENGEMBANGAN INSTRUMEN TES DIAGNOSTIK THREE TIER UNTUK MENDETEKSI MISKONSEPSI MATAPELAJARAN KIMIA MATERI LARUTAN ELEKTROLIT DAN NON ELEKTROLIT Juliati Raabi; Rustam Musta; saefuddin saefuddin
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol 7, No 3 (2022): Edisi Desember
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim.v7i3.25742

Penelitian ini bertujuan untuk mengetahui bagaimana validitas, reliabilitas, tingkat kesukaran dan daya pembeda dari instrumen tes diagnostik tiga tingkat yang dikembangkan dan bagaimana profil miskonsepsi peserta didik SMA Negeri 1 Kulisusu pada materi larutan elektrolit dan non elektrolit. Penelitian ini merupakan penelitian Research & Development (R&D) dengan menggunakan model pengembangan 4D yang diterapkan tanpa menggunakan tahapan diseminasi. Sampel dalam penelitian ini adalah 56 peserta didik kelas X MIPA yang terdiri dari X Mipa 3 dan X MIPA 5 SMA Negeri 1 Kulisusu. Bentuk instrumen yang digunakan adalah tes diagnostik tiga tingkat untuk 20 butir soal. Hasil penelitian menunjukkan bahwa instrumen tes yang dikembangkan dinyatakan valid dengan nilai rata-rata kevalidan sebesar 87%. Butir dinyatakan reliabel dengan koefisien reliabilitas yang tinggi yaitu sebesar 0,74. Tingkat kesukaran soal terdiri atas 3 butir soal mudah, 10 butir sedang dan 7 butir sukar. Tetapi memiliki daya pembeda yang tergolong sangat baik membuka 5 butir, baik membuka 9 butir, cukup membuka 4 butir dan tidak membuka 3 butir. Profil miskonsepsi peserta didik menujukkan bahwa sebanyak 4 peserta didik mengalami miskonsepsi kategori tinggi, sebanyak 25 peserta didik mengalami miskonsepsi kategori sedang dan sebanyak 27 peserta didik mengalami miskonsepsi kategori rendah, dimana peserta didik mengalami miskonsepsi pada sub konsep sifat larutan elektrolit sebesar 35,71%, sub konsep kelompokkan solusi berdasarkan daya hantar listriknya sebesar 36,79% dan sub konsep jenis kimia dan sifat elektrolit suatu zat sebesar 37,

Characterization of Methyl Ester Sulfonate (MES) from Mahagony (Swietenia macrophylla King) with Variations in H2SO4 Concentration and Sulfonation Duration Laily Nurliana; La Ode Kadidae; Sunarti Sunarti; Rustam Musta
ALCHEMY Jurnal Penelitian Kimia Vol 17, No 2 (2021): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.17.2.51613.192-201

Methyl ester sulfonate derived from mahogany (Swietenia macrophylla K.) oil has been characterized. The research began by synthesizing mahogany methyl ester (ME) in 4 stages: pressing, degumming, esterification, and transesterification. The next process was synthesizing methyl ester sulfonate (MES) also in four stages: sulfonation, bleaching, neutralization, and drying. The reactant for MES synthesis in this study was H2SO4 with a mole ratio of 1:6 and variations in the concentration of H2SO4 (70%, 75%, 80%, 85%, and 90%) as well as variations in the duration of sulfonation (45, 60, 75, 70, and 105 minutes) to determine the characteristics of the synthesized MES including density, acid number, and emulsion stability. The effect of the combination of treatment variations was analyzed using the two-way ANOVA test and the least significant difference (LSD) test. This research showed that MES from mahogany seed oil from a combination of variations in treatment has a density ranging from 0.91 to 0.97 g/mL where the LSD test at α = 0.05 produces three different MES density groups due to variations in the concentration of H2SO4 namely A (70 % and 75%), B (80% and 85%), and C (90%). The resulting MES acid numbers ranged from 4.69 ‒ 17.74 mgKOH/g sample with three different groups of MES acid numbers due to variations in the concentration of H2SO4, namely A (85 and 90%), B (75% and 80%), and C (70%). The stability of mahogany oil-based MES emulsion ranged from 0.000 ‒ 0.975 and two different MES emulsion stability groups were obtained due to variations in the concentration of H2SO4, namely A (80% and 85%) and B (70%, 75%, and 90%). FTIR spectrophotometer showed the presence of S=O groups at wavenumber 1172 cm-1 and S‒O groups at wavenumbers 972.12 cm-1 and 879.54 cm-1 proved that MES was successfully synthesized.

Pengembangan Lembar Kerja Peserta Didik Berbasis Inkuiri Terbimbing untuk Meningkatkan Hasil Belajar Siswa pada Materi Koloid Firayanti; Rahmanpiu; Rustam Musta
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol. 8 No. 1 (2023): April 2023
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim.v8i1.7

The research “Development of Guided Inkuiry-Based Student Worksheets to Improve Student Learning Outcomes on Colloidal Material” aims to determine the feasibility, practicality, and efeectivennes of guided inkuiry-based student worksheets on colloidal material. The research and development (R&D) the Thiagarajan model. The development procedure includes the defining, designing and developing stages. The sample in this study were 10 students of class XI IPA 4. The research instrument used validation sheets, test questions sheets and student response questionnaire sheets. The research data were then analyzed using descriptive analysis. The results showed that the guided inquiry-based worksheet products that had been developed and assessed by expert validators were in the average percentage of 84,83%, student responses to guided inquiry-based worksheets obtained a percentage of 78,32% in the category feasible and the level of effectiveness obtained by moderate category cazb be said to be quite effective.

Pengembangan Media Pembelajaran dengan Metode ADDIE Berbasis Video Sparkol pada Materi Sistem Koloid Anisah Syarifah Hamzah; Rustam Musta; Dahlan
Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Vol. 9 No. 3 (2024): Desember 2024
Publisher : Jurusan Pendidikan Kimia Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/jpkim.v9i3.67

Penelitian ini bertujuan (1) Mengetahui kualitas video sparkol pada materi sistem koloid yang dikembangkan untuk siswa kelas XI MIPA 5, dan (2) Mengetahui media pembelajaran berbasis video sparkol yang dikembangkan dapat meningkatkan hasil belajar siswa di kelas XI MIPA 5. Penelitian ini dilaksanakan pada semester genap TA 2022/2023 di SMAN 4 Kendari dengan jumlah 40 siswa. Pengembangan media menggunakan metode ADDIE dan pengumpulan data dilakukan melalui angket validasi, respon siswa, dan soal pre-test dan post-test. Proses pembelajaran menghasilkan kualitas video sparkol yang dikembangkan pada materi sistem koloid di kelas XI MIPA 5, berdasarkan penilaian validator dengan persentase rata-rata yang diperoleh yaitu 82,91% masuk kategori “Sangat layak”, dan media pembelajaran berbasis video sparkol yang dikembangkan efektif meningkatkan hasil belajar siswa di kelas XI MIPA 5 yang ditunjukkan oleh nilai rata-rata N-Gain 0,74 dengan kategori “Tinggi”.

EFEKTIVITAS PENGGUNAAN METODE EKSPERIMEN TERHADAP KETERAMPILAN PROSES SAINS DAN HASIL BELAJAR SISWA PADA MATERI TITRASI ASAM BASA Rendy Renaldy Pikoli; Rustam Musta; La Harimu
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 12 No. 03 (2026): Volume 12 No. 3, September 2026 Publish
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v12i03.17273

Chemistry learning not only requires students to understand concepts theoretically but also emphasizes scientific skills through laboratory activities. However, student's science process skills and learning outcomes in acid–base titration remain relatively low. Therefore, a teaching method that actively involves students in the learning process is needed. This study aimed to determine the effectiveness of the experimental method on student's science process skills and learning outcomes in acid–base titration at SMA Negeri 4 Konawe Selatan. This study employed a quantitative approach using a pre-experimental method with a One-Group Pretest– Posttest Design. The sample consisted of 25 twelfth-grade students from Class XII A of SMA Negeri 4 Konawe Selatan. The research instruments included a science process skills observation sheet, a learning outcomes test, and a student response questionnaire. The data were analyzed using descriptive statistics and n-Gain analysis. The results showed that the implementation of the experimental method had a positive effect on student's science process skills and learning outcomes. The mean science process skills score was 71.14, which was categorized as very good. Student’s learning outcomes improved from a mean pretest score of 45.60 to a mean posttest score of 83.80, with a mean n-Gain score of 0.71, which was categorized as high. In addition, student’s responses to the implementation of the experimental method obtained an average percentage of 83.53, which was classified as very good. Based on these findings, it can be concluded that the experimental method is effective for teaching acid–base titration in chemistry because it improves student’s science process skills and learning outcomes.

Co-Authors Abdul Rahim Abraham Rahman Aceng Haetami - Anisah Syarifah Hamzah Dahlan Firayanti Ibrahim, Muh. Siddik Imran Imran Juliati Raabi La Harimu La Harimu La Ode Kadidae, La Ode La Rudi - Laily Nurliana Laily Nurliana Laily Nurliana Laily Nurliana Marshaclaudi Sarah Halim Murni Sabilu Nada Shofa Nasruddin Nasruddin Nursin Nursin Nurwahidah Nurwahidah Rahmanpiu . Rendy Renaldy Pikoli Saefuddin Saefuddin Siti Hardiyanti Triana Sri Wulandari Sunarti Sunarti Ustamuni Ustamuni

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