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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENELITIAN SAINTIKA Elkawnie JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pendidikan Kimia Universitas Riau Lantanida Journal Jurnal Pendidikan Kimia (JPKim) JOURNAL OF SCIENCE AND SOCIAL RESEARCH ALKIMIA : Jurnal Ilmu Kimia dan Terapan Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Journal of Science and Science Education (JoSSEd) Reflection Journal Chemedu: Jurnal Ilmiah Pendidikan Kimia Journal of The Indonesian Society of Integrated Chemistry
Ahmad Nasir Pulungan
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Neuroscience Physics Social Sciences Other

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Analysis and Characterization of Interactions Between Components in Claymask Formulations Khairatun Annisa; Ahmad Nasir Pulungan; Junifa Layla Sihombing
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 1 (2025): JANUARY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i1.68671

Abstract

The basic properties that need to be considered and maintained in the use of an ingredient in cosmetic and pharmaceutical formulations are: colloidal size, plasticity of crystal structure, mineralographic composition, high cation exchange capacity, development capacity, high specific surface area, and consequently strong adsorption and absorption capacity. Clay masks can contain active ingredients in the form of antibacterial with alternative natural ingredients such as babadotan leaf extract. The analysis of the functional cluster in the study was obtained using the Fourier Transform Infrared (FT-IR) method,Evaluation of clay mask preparations includes testing of physical and chemical properties. Testing of physicochemical properties consists of organoleptics, pH, homogeneity, dispersibility, adhesion and antibacterial test against bacteria p. Acnes. The stability of the preparation will be damaged if the mixing system is disturbed, mainly due to temperature changes and changes in composition due to excessive addition of one of the phases or if the emulsifying substances are not mixed with each other. The extraction results obtained from babadotan the yield produced is 17.63%. The FTIR spectrum obtained for the clay mask formulation shows the presence of new peaks at wave numbers 3310, 2120, 1430 and 2126 cm-1 where these peaks appear due to the additional ingredients used in the cosmetic formulation.The interaction between the components of the clay mask depends on the type of clay being applied. Interactions can be seen in FTIR with additional spectral peaks caused by other additives such as glycerin, In which the interaction shows the OH group involved in water absorption. This is because the results of all evaluations, Formula I tends to be stable close to the requirements of the clay mask preparation.
Implementation of Problem Based Learning Model Assisted by Electronic Student Worksheets to Improve Learning Outcomes and Learning Motivation on Reaction Rate Material Manurung, Elisa; Pulungan, Ahmad Nasir; Sudrajat, Ajat; Amdayani, Susilawati; Roza, Destria
Journal of Science and Science Education Vol. 6 No. 2 (2025): October
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v6i2.12064

Abstract

Learning media serves to assist teachers in conveying information to students and can increase student learning motivation. This study aims to determine the application of the Problem Based Learning learning model assisted by E-LKPD to improve learning outcomes, learning motivation and the relationship between learning motivation and learning outcomes on the reaction rate material at Kartika 1-2 Medan Private High School. The type of research used is Quasy Experiment using pretest posttest. Sampling was done by purposive sampling. The sample consisted of one class, namely class XI IPA 4 as the experimental class (n = 30). Learning outcome data were processed using the Normalized Gain (N-Gain) test. The hypothesis was tested by linear regression and correlation test. The effectiveness of the Problem Based Learning learning model to improve learning outcomes and learning motivation on the reaction rate material is seen from the average posttest and pretest scores of 33.5 and 89.83, then the average N-gain value of 0.84 is included in the high category. The average value of students' initial and final learning motivation measured using a learning motivation questionnaire is 93.62, which is in the high category. These results indicate an increase in student learning outcomes after learning using the Problem Based Learning model assisted by E-LKPD. Hypothesis testing produces a value of rhit= 0.71 and rtabel = 0.36 at the significance level (  = 0.05) which shows that rhit > rtabel so it can be concluded that there is a significant relationship between learning outcomes and student learning motivation.
SKRINING FITOKIMIA DARI DAUN LIDAH MERTUA (SANSEVIERIA TRIVASCIATA) Siahaan, Ella Oktavianna; Syahputra, Ricky Andi; Sutiani, Ani; Purba, Jamalum; Pulungan, Ahmad Nasir; Nasution, Zuhairiah
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 8, No 3 (2025): August 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v8i3.4092

Abstract

Abstract: Sansevieria Trivasciata (snake tongue) is a traditional medicinal plant known to contain various bioactive compounds. This study aims to identify secondary metabolite content and characterize Sansevieria leaf crude extract. Plant samples were obtained from Aekbolon village, North Sumatra, and have undergone a taxonomic identification process. The crude extract was prepared by drying and grinding the leaves. The characterization results showed a water content of 8.5% and a water-soluble extract content of 23.85%, which is in accordance with the quality standards of crude extracts according to the Indonesian Herbal Pharmacopoeia. Extraction was carried out using a maceration method using 96% ethanol for three consecutive days. The resulting thick extract was then tested qualitatively to detect secondary metabolites. The screening results showed the presence of allkaloids, flavonoids, saponins, and steroids, while tannins were not detected. These findings indicate that Sansevieria has potential as a source of natural active ingredients for the development of herbal medicines. Keywords: Sansevieria Trivasciata, Phytochemical Screening, Secondary Metabolites Abstrak: Sansevieria Trivasciata (lidah mertua) merupakan tanaman obat tradisional yang diketahui mengandung berbagai senyawa bioaktif. Penelitian ini bertujuan untuk mengidentifikasi kandungan metabolit sekunder serta melakukan karakterisasi simplisia daun Sansevieria. Sampel tanaman diperoleh dari desa Aekbolon, Sumatera Utara, dan telah melalui proses identifikasi taksonomi. Simplisia disiapkan melalui proses pengeringan dan penghalusan daun. Hasil karakterisasi menunjukkan kadar air sebesar 8,5% dan kadar sari larut dalam air sebesar 23,85%, yang sesuai dengan standar kualitas simplisia menurut Farmakope Herbal Indonesia. Ekstraksi dilakukan dengan metode maserasi menggunakan etanol 96% selama tiga hari berturut-turut. Ekstrak kental yang diperoleh kemudian diuji secara kualitatif untuk mendeteksi metabolit sekunder. Hasil skrining menunjukkan adanya senyawa allkaloid, flavanoid, saponin, dan steroid, sedangkan tanin tidak terdeteksi. Temuan ini menunjukkan bahwa Sansevieria memiliki potensi sebagai sumber bahan aktif alami untuk pengembangan obat herbal. Kata kunci: Sansevieria Trivasciata, Skrining Fitokimia, Metabolit Sekunder
Analysis Relationship between Free Fatty Acid and Peroxide Values in Crude Palm Oil Industry Ramlan Silaban; Marta Adeliana Sijabat; Afrilita Harahap; Timotius Agung Soripada; Marham Sitorus; Eddiyanto; Ahmad Nasir Pulungan
ALKIMIA Vol 10 No 1 (2026): ALKIMIA
Publisher : SCIENCE AND TECHNOLOGY FACULTY OF UNIVERSITAS ISLAM NEGERI RADEN FATAH PALEMBANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/x133fg91

Abstract

Crude Palm Oil (CPO) is crude palm oil extracted from the palm oil industry that has not undergone a refining process. CPO quality is considered good if it meets applicable quality standards. This study aims to determine a mathematical equation model that describes the relationship between free fatty acid value (FFA) quality parameters and peroxide value (PV) in CPO samples. FFA content analysis was carried out using the alkalimetric titration method, while the peroxide value was tested using the iodometric titration method. The storage time variations used were 0 - 3 weeks. The results showed that : (1). The sample consist Free Fatty Acid value (FFAV)  were 2.97%; 3.22%; 3.41%; and 3.66%, respectively, with an average of 3.31%. Meanwhile, Peroxyde Value (PV)  ​​were obtained at 1.85; 2.25; 2.65; and 3.04 meq O₂/kg. (2). According to these results, the FFAV content still meets the Indonesian National Standard (SNI) standard (<5.0%) and the PV value is also below the SNI limit (<10 meq O₂/kg). (3). The mathematicals model of relationship between FFAV shows a significant effect with a linear regression equation of Y = 0.436x + 0.0221 and a determination value (R²) of 0.0976. (4). This model indicates that an increase in FFA levels is directly proportional to an increase in peroxide value. The mathematical model obtained illustrates that an increase in PV is in line with an increase in FFA levels, both of which play an important role in determining the quality stability and storage durability of CPO.
The Effect of Chemical Activation Using Base Solution With Various Concentrations Towards Sarulla Natural Zeolite Saharman Gea; Agus Haryono; Andriayani Andriayani; Junifa Layla Sihombing; Ahmad Nasir Pulungan; Tiamina Nasution; Rahayu Rahayu; Yasir Arafat Hutapea
Elkawnie Vol. 6 No. 1 (2020)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v6i1.6913

Abstract

Abstract : Material characteristics analysis of Sarulla natural zeolite (SNZ) with base activation has been carried out. The base used was NaOH at various concentrations; 0.2 M, 0.5 M, and 2 M. Base activated catalysts were characterized by X-ray Fluorescence (XRF), X-ray diffractometer (XRD), Fourier-transform Infrared (FTIR) Spectroscopy, Scanning Electron Microscopy (SEM) and gas adsorption analysis using BET method. The procedures applied have caused differences in adsorption and desorption rates as well as the crystallinity values of the catalytic materials. Moreover, the ratio of Si/Al contents has also changed at the lowest concentration. On the other hand, the crystallinity of catalysts has decreased at the highest concentration of base applied. The results are reinforced in FTIR characterization which shows the changes of silanol bonds to become silicate and aluminate. Furthermore, morphological analysis of the catalysts shows that homogenous surface was obtained at low concentration, while rough/lumpy surfaces was obtained at higher concentration.Abstrak : Analisis terhadap karakteristik material dari zeolit alam Sarulla (SNZ) dengan metode aktivasi basa telah dilakukan. Basa yang digunakan ialah NaOH dengan berbagai konsentrasi; 0,2 M; 0,5 M, dan 2 M. Katalis yang telah diaktivasi dengan basa kemudian dikarakterisasi dengan Analisis X-ray Fluorescence (XRF), X-ray diffractometer (XRD), Fourier-transform Infrared (FTIR) Spectroscopy, Scanning Electron Microscopy (SEM) dan Gas Adsorption menggunakan metode BET. Dari hasil penelitian, ditemukan perbedaan pada tingkat adsorpsi dan desorpsi, begitu juga dengan kristalinitas pada material katalis. Lebih jauh, rasio konten Si/Al juga berubah pada basa dengan konsentrasi terendah. Di sisi lain, tingkat kristalinitas dari katalis mengalami penurunan pada basa dengan konsentrasi tertinggi. Hasil ini diperkuat dengan data FTIR yang menunjukkan perubahan ikatan silanol menjadi silikat dan aluminat. Lebih jauh, analisis morfologi pada katalis menunjukkan bahwa permukaan yang homogen didapatkan dari penggunaan basa dengan konsentrasi rendah. Sebaliknya, basa dengan konsentrasi tinggi memberikan bentuk permukaan katalis yang tidak homogen serta kasar.
Pengaruh Model Discovery Learning Berbantuan Wordwall untuk Meningkatkan Minat dan Hasil Belajar Siswa Kelas XI Materi Larutan Elektrolit dan Nonelektrolit Saragih, Elisa Fitri; Sihombing, Junifa Layla; Yusuf, Muhammad; Dalimunthe, Makharany; Pulungan, Ahmad Nasir
ChemEdu Vol 7, No 1 (2026)
Publisher : Jurusan Kimia FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/chemedu.v7i1.83301

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model Discovery Learning berbantuan media Wordwall terhadap minat dan hasil belajar siswa pada materi larutan elektrolit dan nonelektrolit, serta menganalisis hubungan antara minat belajar dan hasil belajar siswa. Penelitian dilaksanakan di SMA Negeri 10 Medan dengan sampel kelas XI F-2 dan XI F-6 yang ditentukan melalui teknik random sampling. Desain penelitian yang digunakan adalah Pretest-Posttest control group design dalam kerangka quasi experimental. Pengumpulan data dilakukan menggunakan tes hasil belajar dan angket minat belajar. Analisis data meliputi uji N-Gain, uji t, dan korelasi Product Moment Pearson. Hasil penelitian menunjukkan bahwa nilai rata-rata N-Gain kelas eksperimen sebesar 58,87% dengan kategori cukup efektif, sedangkan kelas kontrol sebesar 50,73%. Hasil uji Independent Sample T-test menunjukkan nilai signifikansi 0,002 (
Pengembangan E-modul Berbasis Problem-Based Learning dan Pendekatan Deep Learning pada Materi Termokimia Sitinjak, Ezra Rohanauli; Pulungan, Ahmad Nasir; Dalimunthe, Makharany; Kurniawan, Ekin Dwi Arif; Pratiwi, Alfira Julian; Ardila, Mutia; Samosir, Rafidah Almira
Reflection Journal Vol. 6 No. 2 (2026): June
Publisher : Lembaga Penelitian dan Pemberdayaan Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/4rgcf177

Abstract

Penelitian ini bertujuan untuk mengembangkan e-modul pembelajaran kimia berbasis Problem-Based Learning (PBL) yang terintegrasi dengan pendekatan deep learning pada materi termokimia serta mengetahui tingkat kelayakan, kepraktisan, dan efektivitasnya. Penelitian ini merupakan penelitian pengembangan (Research and Development) dengan model 4D (Define, Design, Develop, Disseminate). Subjek penelitian adalah siswa kelas XI SMA Negeri 17 Medan tahun ajaran 2025/2026. Instrumen yang digunakan meliputi lembar validasi ahli, angket respon siswa, serta tes hasil belajar (pretest dan posttest). Hasil penelitian menunjukkan bahwa e-modul yang dikembangkan dinyatakan layak berdasarkan penilaian ahli materi dan ahli media. Tingkat kepraktisan e-modul tergolong baik berdasarkan respon siswa terhadap kemudahan penggunaan, tampilan, dan manfaat pembelajaran. Selain itu, e-modul terbukti efektif dalam meningkatkan hasil belajar siswa dengan nilai N-gain sebesar 0,71 yang termasuk dalam kategori tinggi. Dengan demikian, e-modul berbasis PBL dan pendekatan deep learning dapat digunakan sebagai bahan ajar yang inovatif untuk meningkatkan pemahaman konsep, keterlibatan, serta kemampuan berpikir kritis siswa pada materi termokimia. Development of an E-Module Based on Problem-Based Learning and a Deep Learning Approach in Thermochemistry This study aims to develop a chemistry e-module based on Problem Based Learning (PBL) integrated with a deep learning approach on thermochemistry material and to determine its validity, practicality, and effectiveness. This research employed a Research and Development (R&D) method using the 4D model (Define, Design, Develop, Disseminate). The subjects were eleventh-grade students of SMA Negeri 17 Medan in the 2025/2026 academic year. The instruments used included expert validation sheets, student response questionnaires, and learning outcome tests (pretest and posttest). The results showed that the developed e-module was valid based on expert evaluations. The practicality level was categorized as good based on student responses regarding ease of use, design, and learning benefits. Furthermore, the e-module was proven effective in improving students’ learning outcomes with an N-gain score of 0.71, categorized as high. Therefore, the PBL-based e-module integrated with a deep learning approach can be used as an innovative teaching material to enhance conceptual understanding, student engagement, and critical thinking skills in thermochemistry learning.
Co-Authors ., Asmidi ., Nurrnalis Adittiya Prayoga Afrilita Harahap Agung Abadi Kiswandono Agus Haryono Agus Kembaren Ajat Sudrajat Ajeng Asri Audi Akhir Mauludin Pulungan Ambarwati Ambarwati Amdayani, Susilawati Andriayani Ani Sutiani Ardila, Mutia Ary Anggara Wibowo Ary Anggara Wibowo Aryani, Widya Audi, Ajeng Asri Clara Nur Wandani Dalimunthe, Makharany Dewi Syafriani Dimas Ridho Dwi Siswanta Eddiyanto Eddiyanto Eddiyanto Fahmi, Jaman Girsang, Ermi Hafni Indriati Nasution Haqqi Annazili Nasution Harmileni Hasibuan, Muhammad Irvan Herlinawati Herlinawati Herlinawtati, Herlinawati Ida Duma Riris Intan Ayu Safitri Irma Syahputri Jamalum Purba Janter Pangaduan Simanjuntak Jasmidi ., Jasmidi Jasmidi Jasmidi Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing Junifa Layla Sihombing, Junifa Layla Juniva Laila Sihombing, Juniva Laila Khairatun Annisa Kurniawan, Ekin Dwi Arif Lastri Anita Silitonga Lisna Efiyanti Lisna Efiyanti malis, Nur Manalu, Elisabet Manurung, Elisa Manurung, MS Marham Sitorus Marta Adeliana Sijabat Mhd Fahmi midi, Jas Moondra Zubir MS Manurung Muhammad Hadi Muhammad Hadi Muhammad Irvan Hasibuan Muhammad Yusuf Mutiara Agustina Nst Nia Veronika Nurfajriani Nurfajriani Nurfajriani, Nurfajriani Nurul Hidayah Nurul Hidayat Aprilita Pernando Sitepu Poppy Lindawati Pratiwi, Alfira Julian Puji Prayugo Putri Ayunicha Putri Faradilla Rahayu Rahayu Rahayu Rahayu Rahayu Rahayu Rahmani, Mei Ramadhan, Dwi Sapri Ramlan Silaban Ratna Sari Dewi Roza, Destria Rudi Munzirwan Siregar, Rudi Munzirwan Safitri, Wulan Dwi Saharman Gea Samosir, Rafidah Almira Saragih, Elisa Fitri Saragih, Gimelliya Sari, Dwy Puspita Shallomita, Grace Siahaan, Ella Oktavianna Sianturi, Irianani Ainung Simanjuntak, Evalina Br Simanjuntak, Janter Pangaduan Simatupang, Patricia Sipahutar, Rezwan Mulya Sirait, Martina Siregar, Nuraini Sitinjak, Ezra Rohanauli Sitinjak, Nurhalimah Sri Juari Santosa Sutiani, Ani Syahputra, Ricky Andi Syuhada, Feri Andi Takashi Hayashita Tambunan, Kristine Tiamina Nasution Tiamina Nasution Timotius Agung Soripada Tita Juwitaningsih Trisunaryantr, Wega Triyono . Wardana, Dian Yasir Arafat Hutapea Yuli Asih Wiliranti Yusnidar, Erika Zuhairiah Nasution, Zuhairiah