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All Journal Lantanida Journal Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology Hydrogen: Jurnal Kependidikan Kimia Jurnal Nasional Holistic Science CHEDS: Journal of Chemistry, Education, and Science Reflection Journal Indonesian Journal of Chemical Science Meta: Journal of Science and Technological Education Jurnal Abdimas Ilmiah Citra Bakti
Samosir, Rafidah Almira
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Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Influence of Temperature and Stirring Duration on the Solubility Kinetics of Palm Sugar (Arenga Pinnata) in Water: Implications for Food Processing Efficiency Rafidah Almira Samosir; Alfira Julian Pratiwi; Ekin Dwi Arif Kurniawan; Mutia Ardila; Trimutia Wulandari; Flia Arnesta Sipayung; Dira Rahma Cahya; Nove Briani Minar Sihombing; Einstenia Sirait; Moondra Zubir; Abd Hakim S
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68737

Abstract

Palm sugar (Arenga pinnata) is widely used in traditional and industrial food processing, where its solubility plays a crucial role in determining product consistency and efficiency. However, most previous studies have focused on the solubility of refined cane sugar, leaving limited understanding of how temperature and stirring conditions affect the dissolution behavior of palm sugar, which has a more complex composition. This study aims to examine the effect of temperature, solute mass, and stirring duration on the solubility of palm sugar in water. A laboratory-based experimental method was employed, varying temperature (50°C, 75°C, 100°C), sugar mass (20 g and 40 g), and stirring duration (1 and 2 minutes). In general, the findings indicate that higher temperature accelerates the dissolution rate, while greater solute mass extends dissolution time. These results confirm temperature as the dominant factor influencing dissolution kinetics. The implications of this study include improving household practices for faster sugar preparation, optimizing processing efficiency in small-scale food industries, and contributing to food science education by providing an applied example of solubility principles.
Integrating Virtual Laboratories in Chemistry Education: Vocational Students’ Responses to Cation Qualitative Analysis Samosir, Rafidah Almira; Ardila, Mutia; Pratiwi, Alfira Julian; Kurniawan, Ekin Dwi Arif; Ridho, Dimas
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 2 (2025): April 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i2.15432

Abstract

Research on student responses and the challenges of implementing virtual laboratories in qualitative cation analysis practicums within vocational pharmacy education remains limited. This study aims to explore student responses to the use of virtual laboratories as an alternative learning tool and to identify the challenges faced during its implementation. A qualitative approach with a case study method was employed. Data were collected through questionnaires and classroom observations during the learning process. The participants were 41 Grade XII students of the Pharmacy Program at SMK Galang Insan Mandiri Binjai, who engaged in virtual laboratory-based learning for qualitative cation analysis. The results indicate that virtual laboratories enhance student engagement and comprehension of the subject matter. Students responded positively to the use of virtual labs, reporting increased motivation and interest in developing technology-related skills. However, challenges such as limited digital literacy and infrastructure issues were also identified. The study suggests that virtual laboratories should be complemented with hands-on practicum sessions to provide a balanced and realistic learning experience. These findings offer valuable insights into the potential and limitations of virtual laboratory implementation in vocational pharmacy education.
General Chemistry Class Perspective On The Utilization Of Young Coconut water To Treat Fever Symptom Ridho, Dimas; Juwitaningsih, Tita; Samosir, Rafidah Almira; Pratiwi, Alfira Julian; Ardila, Mutia; Kurniawan, Ekin Dwi Arif; Sianipar, Mirna Wulan Sari; Alisya, Syalwa Nur; Br. Hutahuruk, Novitasari; Tafonao, Firman Satria
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.15819

Abstract

This study aims to analyze the perspectives of students from the Department of Mathematics enrolled in a General Chemistry class regarding the use of young coconut water as a natural remedy to treat fever symptoms. The research is grounded in the widespread trust of Indonesian society in herbal medicine, particularly young coconut water, which has been traditionally used across generations to treat various health conditions, including fever. Young coconut water is known to contain vital nutrients such as electrolytes (potassium, sodium, magnesium), B-complex vitamins, and vitamin C, which help lower body temperature naturally, especially during dehydration caused by fever. A quantitative approach with a descriptive survey method was employed. The data were collected using a closed questionnaire based on a Likert scale, which was tested for validity and reliability, achieving a Cronbach's Alpha value of 0.977-indicating a high level of reliability. Results showed that students' average scores in knowledge (3.90), understanding (3.81), attitude (3.89), and application (3.87) were all in the high category. This indicates that students not only understand the benefits of young coconut water but also grasp scientific concepts related to electrolyte function in fluid balance and immune response. Despite the high scores, some misconceptions persist. For example, a few students believe young coconut water can entirely replace medical treatment or that higher consumption leads to faster healing without regard for appropriate dosage. This highlights the need for improved science-based health literacy. The study concludes that continuous health education through lectures, seminars, and healthy campus campaigns integrating both traditional and medical approaches is essential. These findings are significant in promoting the wise and measurable use of natural remedies like young coconut water while avoiding misuse. Furthermore, the results can serve as a basis for future research, such as clinical trials or laboratory comparisons with other rehydration fluids, and can help develop health promotion policies in academic settings to encourage smart and healthy decision-making among students.
Difference Effect of Addition of Acetic Acid and Citric Acid on the Biodegradation Characteristics of Starch-Based Bioplastics Julian, Alfira; Rafidah Almira Samosir; Mutia Ardila; Ekin Dwi Arif Kurniawan
Indonesian Journal of Chemical Science Vol. 14 No. 3 (2025): Indonesian Journal of Chemical Science
Publisher : Prodi Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/ijcs.v14i3.28455

Abstract

Bioplastik merupakan salah satu alternatif potensial untuk menggantikan plastik konvensional, karena sifatnya yang mudah terdegradasi sehingga lebih ramah lingkungan. Bioplastik dapat disintesis dari pati dan gliserol dengan penambahan asam organik. Penelitian ini bertujuan untuk menganalisis perbedaan pengaruh penambahan asam asetat dan asam sitrat terhadap laju degradasi bioplastik yang berpotensi digunakan sebagai bahan kemasan ramah lingkungan. Bioplastik dibuat menggunakan dua formulasi, yaitu: (1) pati, gliserol, dan asam asetat (cuka), serta (2) pati, gliserol, dan asam sitrat (jeruk nipis), dengan rasio komposisi 18:1,5:1,5 mL. Produk bioplastik yang dihasilkan kemudian diuji sifat biodegradabilitasnya melalui pengamatan selama tiga belas hari. Hasil penelitian menunjukkan bahwa kedua jenis bioplastik belum mengalami degradasi sempurna hingga hari ketiga belas. Namun, pertumbuhan jamur lebih banyak teramati pada bioplastik berbasis asam sitrat. Hal ini diduga berkaitan dengan tekstur bioplastik asam sitrat yang lebih lembap dibandingkan dengan bioplastik yang menggunakan asam asetat. Temuan ini mengindikasikan bahwa jenis asam yang digunakan dalam pembuatan bioplastik dapat mempengaruhi tingkat kelembapan dan pertumbuhan mikroorganisme selama proses degradasi.
PEMANFAATAN IPTEKS DALAM MENDUKUNG PEMBELAJARAN HOTS DI SMK YPP PROF. DR. H. MOHD. HATTA STABAT Nst., Mutiara Agustina; Sutiani, Ani; Dibyantini, Ratu Evina; Sari, Dwy Puspita; Syafriani, Dewi; Ardila, Mutia; Samosir, Rafidah Almira
Jurnal Abdimas Ilmiah Citra Bakti Vol. 6 No. 4 (2025)
Publisher : STKIP Citra Bakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38048/jailcb.v6i4.5944

Abstract

SMK Swasta YPP Prof. Dr. H. Mohd. Hatta merupakan sekolah kejuruan yang baru berdiri kurang dari tiga tahun di Kabupaten Langkat, Provinsi Sumatera Utara, sehingga masih menghadapi permasalahan dalam optimalisasi proses pembelajarannya. Mitra mengalami kendala dalam menerapkan pembelajaran berbasis Higher Order Thinking Skills (HOTS), terutama terkait pemanfaatan IPTEKS sebagai pendukung pengembangan kemampuan berpikir tingkat tinggi siswa. Kegiatan Pengabdian kepada Masyarakat (PKM) ini bertujuan meningkatkan pengetahuan dan keterampilan guru serta stakeholder sekolah dalam menerapkan pembelajaran HOTS melalui pemanfaatan IPTEKS secara efektif. Mitra kegiatan adalah guru dan stakeholders SMK YPP Prof. Dr. H. Mohd. Hatta yang berjumlah 20 orang. Metode pelaksanaan meliputi sosialisasi konsep HOTS, edukasi penggunaan IPTEKS dalam pembelajaran, demonstrasi media pembelajaran digital, dan pendampingan praktik penerapan. Hasil kegiatan menunjukkan peningkatan pemahaman peserta terhadap strategi dan media pembelajaran berbasis IPTEKS, ditandai dengan antusiasme tinggi dan kemampuan peserta dalam menyusun rancangan pembelajaran HOTS sederhana. Tim juga melakukan evaluasi untuk memastikan keberlanjutan penerapan pembelajaran berbasis HOTS di sekolah. Kesimpulannya, kegiatan PKM ini efektif dalam memperkuat kemampuan guru dalam memanfaatkan IPTEKS untuk mendukung implementasi pembelajaran HOTS, serta berkontribusi pada peningkatan kualitas proses pembelajaran di SMK YPP Prof. Dr. H. Mohd. Hatta.
The Effect of Learning Methods on Student Participation and Achievement in Chemistry Education Sinaga, Dewi Agustina; Harahap, Iza; Marbun, Nova Fajria; Ravisa; Sazkia; Samosir, Rafidah Almira
META: Journal of Science and Technological Education Vol. 4 No. 2 (2025)
Publisher : Aspirasi Masyarakat Intelektual Islam Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study analyzes the role of various instructional methods in enhancing student engagement and academic achievement in chemistry learning. The research employed a qualitative descriptive approach using a literature review design that examined findings from peer-reviewed journal articles, classroom action research, and educational reports. The synthesis of the reviewed studies indicates that student-centered instructional methods, particularly Project-Based Learning (PBL) and collaborative learning, consistently lead to higher levels of participation, conceptual comprehension, and overall learning outcomes. Meanwhile, teacher-centered lecture methods tend to result in lower engagement and weaker retention. The review also shows that combining multiple instructional strategies allows teachers to respond more effectively to differences in learners’ needs, characteristics, and learning objectives. The research concludes that blended instructional approaches that integrate project-based, collaborative, and reflective learning activities create more interactive and meaningful chemistry learning environments, while also supporting the development of essential twenty-first-century competencies.
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.
Pengembangan E-modul Kimia Berbasis  PBL dan 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 kimia berbasis Problem-Based Learning (PBL) yang terintegrasi dengan pendekatan deep learning pada materi termokimia serta menganalisis kelayakan, kepraktisan, dan efektivitasnya. Penelitian ini menggunakan metode Research and Development dengan model 4D (Define, Design, Develop, Disseminate). Subjek penelitian adalah 32 siswa kelas XI SMA Negeri 17 Medan yang dipilih secara purposive sampling karena mewakili kemampuan akademik heterogen dan sesuai kebutuhan uji coba produk. Instrumen penelitian meliputi lembar validasi ahli, angket respons siswa, serta tes hasil belajar pretest-posttest. Hasil penelitian menunjukkan e-modul berada pada kategori sangat layak untuk aspek media (86%) dan layak untuk aspek materi (73,38%). Respons siswa menunjukkan kategori praktis, sedangkan efektivitas ditunjukkan oleh nilai N-gain 0,71 (kategori tinggi). Temuan ini menegaskan bahwa integrasi PBL dan deep learning dalam bahan ajar digital mampu memperkuat pembelajaran bermakna, keterlibatan siswa, dan pemahaman konseptual pada materi kimia. Development of a PBL- and Deep Learning-Based Chemistry E-Module on Thermochemistry  This study aims to develop a chemistry e-module based on Problem-Based Learning (PBL) that integrates a deep learning approach into thermochemistry material, as well as to analyze its feasibility, practicality, and effectiveness. This study employs the Research and Development method using the 4D model (Define, Design, Develop, Disseminate). The subjects of the study were 32 eleventh-grade students at State High School 17 Medan, selected via purposive sampling because they represented a heterogeneous academic ability and met the requirements for product testing. Research instruments included an expert validation sheet, a student response questionnaire, and pretest-posttest learning outcome tests. The results of the study indicate that the e-module falls into the “highly suitable” category for the media aspect (86%) and the “suitable” category for the content aspect (73.38%). Student responses indicate the “practical” category, while effectiveness is demonstrated by an N-gain value of 0.71 (high category). These findings confirm that the integration of PBL and deep learning in digital instructional materials can enhance meaningful learning, student engagement, and conceptual understanding of chemistry content.
Co-Authors Abd Hakim S Afrilia Tria Ivanka Agnes Aprilyani Br Silitonga Ahmad Nasir Pulungan Alisya, Syalwa Nur Anna Sakila Ardila, Mutia Br. Hutahuruk, Novitasari Dalimunthe, Makharany Dewi Syafriani, Dewi Dimas Ridho Dindy Louiza Pangaribuan Dira Rahma Cahya Einstenia Sirait Eren Nazura Faizah A. Nasution Feri P. Jahata Samosir Flia Arnesta Sipayung Geby Mai Irawan Gioni Thesia Boru Simbolon Grace Octavia Hutasoit Gresvita Sanova Turnip Harahap, Iza Ida Duma Riris Julian, Alfira Juwitaningsih, Tita Kurniawan, Ekin Dwi Arif Marbun, Nova Fajria Marham Sitorus Moondra Zubir Muhammad Fadhli Mutia Ardila Mutia Ardila Najwa Putri L. Nasution Ningsi, Rira Octa Nove Briani Minar Sihombing Nst., Mutiara Agustina Nur, M Rosyadi Izzuddin Okta Miranda Samosir Pratiwi, Alfira Julian Rabiah Afifah Daulay Ramlan Silaban Ratu Evina Dibyantini Ravisa Sari Mawaddah Sari, Dwy Puspita Sazkia Sa’diyah, Halimatus Sianipar, Mirna Wulan Sari Sinaga, Dewi Agustina Sitinjak, Ezra Rohanauli Sutiani, Ani Tafonao, Firman Satria Tetra Tasya Anggraini Butar Timotius Agung Soripada Trimutia Wulandari Vivy Cintia Laudia Hutagaol