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All Journal Jurnal Matematika & Sains Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Journal of Mathematical and Fundamental Sciences Jurnal Riset Kimia Jurnal Pendidikan Kimia Universitas Riau Jurnal Tadris Kimiya Jurnal Pendidikan Kimia (JPKim) JOURNAL OF SCIENCE AND SOCIAL RESEARCH Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Indonesian Journal of Chemical Science and Technology Hydrogen: Jurnal Kependidikan Kimia Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran SCIENCE : Jurnal Inovasi Pendidikan Matematika dan IPA Ensiklopedia: Jurnal Pendidikan dan Inovasi Pembelajaran Saburai Educenter: Jurnal Ilmiah Pendidikan Jurnal Sains dan Teknologi Makara Journal of Science Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Jurnal Sains dan Ilmu Terapan Unesa Journal of Chemistry EDUCENTER JURNAL PENDIDIKAN Journal of Humanities Education Management Accounting and Transportation Indonesian Journal of Jamu Jurnal Pendidikan dan Pembelajaran Kimia (JPPK)
Iis Siti Jahro
Universitas Negeri Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Sintesis dan Karakterisasi Senyawa Ion Tembaga (II) Sulfat (CuSO₄) melalui Reaksi Tembaga (II) Oksida dengan Asam Sulfat Jahro, Iis Siti; Zai, Erniati; Waruwu, Julia Putri Santi; Manik S, Romauli Magdalena; Simamora, Theresia Valesita
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 2 (2026): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i2.1191

Abstract

This study aims to synthesize and characterize copper(II) sulfate pentahydrate (CuSO4·5H2O) through a simple practical method that is suitable for application in educational laboratories. The synthesis was carried out through a neutralization reaction between copper(II) oxide (CuO) and dilute sulfuric acid (H2SO4 2M), followed by heating at a temperature of ±70°C, gravity filtration, temperature crystallization using ice cubes, and drying at room temperature. Characterization was carried out visually on the color and shape of the crystals formed. The synthesis results in a characteristic blue crystal with an actual mass of 0.73 grams. The yield calculation using Mr CuSO4·5H2O (249.5 g/mol) resulted in a yield of 11.7%. The relatively low yield is influenced by the small reaction scale, product loss during the process, and suboptimal crystallization conditions. his method can be an alternative for undergraduate educational practicums, although optimization of reaction conditions is still needed.
Sintesis dan Karakterisasi Senyawa Kompleks [Cu(H2O)2(NH3)4]SO4 Simorangkir, Rebecca Febi Permata Br; Siregar, Amita M.; Pakpahan, Putri Soviana; Siagian, Yusi Yulfani; Jahro, Iis Siti
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 6 No. 2 (2026): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v6i2.1192

Abstract

This study aims to synthesize and characterize the complex compound [Cu(H2O)2(NH3)4]SO4 through ligand substitution reaction between CuSO4·5H2O and ammonia solution in the context of coordination chemistry learning. The research problem is focused on the mechanism of complex formation, color changes as an indicator of the formation of coordination compounds, synthesis efficiency based on yield values, and confirmation of the presence of complex constituent ions. Laboratory experimental methods were carried out through complex formation, crystallization, separation, and drying of crystals, as well as classical characterization using solubility tests and chemical reactions with HCl, NaOH, and BaCl₂. The results showed a change in the color of the solution from light blue to deep dark blue which indicates the formation of the complex [Cu(H₂O)₂(NH₃)₄]²⁺ due to the substitution of water ligands by ammonia. Dark blue crystals were successfully obtained with a yield of 91.46% which indicates high synthesis efficiency. Characterization tests confirmed the presence of NH₃ ligands, Cu²⁺ ions, and SO₄²⁻ ions as constituents of the complex. These findings are consistent with valence bond theory and crystal field theory in explaining changes in the coordination structure and optical properties of the complex, making this procedure a potential alternative for simple laboratory experiments in coordination chemistry.
Effectiveness of Discovery Learning with Genially for Improving Students’ HOTS Science Literacy on Chemical Bonding Deka Agustini Laia; Iis Siti Jahro
Jurnal Inovasi Pembelajaran Kimia Vol. 8 No. 1 (2026): APRIL 2026 EDITION
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/fb1ajf46

Abstract

Higher Order Thinking Skills (HOTS) and scientific literacy are important competencies for students in learning chemistry, especially on abstract topics such as chemical bonding. This study aims to determine the effect of the Discovery Learning model assisted by interactive Genially media on students’ HOTS scientific literacy skills. The study was conducted on 10th grade students at SMA Negeri 2 Percut Sei Tuan on the topic of chemical bonding. This research employed a quantitative pre-experimental method using a one-group pretest-posttest design. The sample consisted of 30 students selected through random sampling techniques. Data were collected using pre-test and posttest instruments designed to measure students’ HOTS scientific literacy skills before and after the implementation of the Discovery Learning model with Genially media. Data analysis included normality tests, paired sample t-tests (right-tail), and N-Gain analysis. The results showed that the average score increased from 34.4 in the pre-test to 59.8 in the post-test. The paired sample t-test produced a significance value of 0.002 (p < 0.05), indicating that the treatment had a significant effect on students’ HOTS scientific literacy skills. In addition, the N-Gain score of 0.34 indicated a moderate level of improvement. In conclusion, the Discovery Learning model assisted by interactive Genially media is effective in improving students’ HOTS scientific literacy skills on chemical bonding. 
The Implementation of Reading to Learn (R2L) Method and Summary Writing to Enhance Students&#39; HOTS-Literacy Science on Hydrocarbon Materials Aisyah Harahap; Iis Siti Jahro
Jurnal Pendidikan dan Pembelajaran Kimia Vol. 14 No. 1 (2025): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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

Abstract

Implementasi Metode Reading to Learn (R2L) dan Pembuatan Rangkuman untukMeningkatkan Kemampuan HOTs-Literacy Sains Siswa pada Materi Hidrokarbon.Penelitian ini bertujuan untuk mengetahui pengaruh penerapan metode Reading to Learn danpembuatan rangkuman terhadap kemampuan HOTs-Literacy Sains Siswa pada materihidrokabon. Populasi dalam penelitian ini adalah siswa kelas XI SMA Negeri 1 TanjungBeringin yang berjumlah 6 kelas. Teknik pengambilan sampel menggunakan PurposiveSampling, dalam penelitian ini adalah siswa kelas XI-A1.1 yang berjumlah 34 orang. Penelitianini menggunakan instrument tes sebanyak 12 butir soal yang terdiri dari essai, pilihan ganda,dan benar-salah. Berdasarkan pengolahan data diperoleh rata-rata nilai kemampuan HOTs-Literacy sains siswa sebesar 83,14 ± 4.98. Sebaran kemampuan awal siswa masih beradadibawah nilai KKM dengan katagori rendah &gt;55 dan mengalami peningkatan pada sebarankemampuan akhir dengan rentang nilai 77-91. Uji hipotesis menggunakan model Regresi LinierBerganda dengan hasil penelitian diperoleh nilai sig 0,01 &lt; �� (0,05) artinya H a diterima dan H 0ditolak, yang berarti terdapat pengaruh penggunaan metode Reading to Learn (R2L) terhadapkemampuan HOTs-Literacy Sains siswa. Pengujian pada pembuatan rangkuman diperoleh nilai sig 0,04 &lt; �� (0,05) dengan ini, H a diterima dan H 0 ditolak, terdapat pengaruh pembuatanrangkuman terhadap kemampuan HOTs-Literacy Sains siswa pada materi hidrokarbon.Pengujian pada metode Reading to Learn dan pembuatan rangkuman secara simultandiperoleh nilai sig 0.00 &lt; �� (0,05), artinya metode Reading to Learn dan pembuatanrangkuman secara simultan (bersama-sama) mempengaruhi kemampuan HOTs-Literacy Sainssiswa pada materi hidrokarbon.
Co-Authors Adelia Yesya Putri Hasibuan Agnes Yuniarty Simbolon Aisyah Harahap Aldo Geo Frengky Saragih Amalia, Meisya Anggun Maharani Angin, Jansen Riko Perangin Ani Sutiani Ani Sutiani Anisa Nursalsabillah Nasution Annisa Rahayu Annisa Rahayu Ardiansyah Ardiansyah Asep Wahyu Nugraha Asep Wahyu Nugraha Aulianti, Dita Ayi Darmana Ayi Darmana Ayi Darmana, Ayi Az Zahra, Salwa Banu Nursanni Bohari M. Yamin Bohari M. Yamin Br Bangun, Kurnia Wati Catur Kurniawan Christin Angeline Laia CINDY CINDY Daeli, Dinastini Damanik, Haryana Damanik, Syifa Namira Debora Putri Sitorus Debora Putri Sitorus Deka Agustini Laia Delima Sianturi Desri Berliana Daeli Djulia Onggo Djulia Onggo Djulia Onggo Dwi Rahmanisa Dwiyanda, Fadhilla Efrio Angelina Sitio Elit Manaman Gulo Esther Jacoba Martha Vertelman Fadhila, Nabila Nur Fahimah Martak Faradilla, Putri Fitria Febrianti, Fitria Gavril Orlando Tumio Manalu Gurning, Mita Agresia Harahap, Dhini Haryati Hasibuan, Hanisah Hotma Br Butar Butar Hutagalung, Tien Parsaulian Hutagaol, Rahul Hutauruk, Rafli Intan Ayu Safitri Intan Fahira Yuzan Ismunandar Ismunandar . Ismunandar Ismu Izwani, Putri Khairi Jasmidi Jasmidi Jasmidi Juwitaningsih, Tita Kembaren, Theresya Yolanda Khuzaimah Dasopang Kristian Turnip Maibang, Siti Rahmah Manik S, Romauli Magdalena MANIK, INDA WATI Manullang, Marisa Marham Sitorus Marpaung, Mutiara Evelin Yoseva Meli Sartika Silaban Moondra Zubir Mutia Patmasari Batubara Mutiah Khaira Sihotang Nasution, Anisa Nursalsabillah Nasution, Fadiya Malona Nasution, Rida Anastasia Nazwa Ramadhani Nikita, Ade Rani Nurfajriani Nursanni, Banu Pakpahan, Putri Soviana Pandiangan, Elsa Elperida Panjaitan, Nola Sari Petra van Koningsbruggen Pratama, Muhammad Rizky Putri Faradilla Putri Rizkia, Putri Putri Yustika Sary Rafida Khairani Ratu Evina Dibyantini Ratu Evina Dibyantini Regina Gresella Br Panjaitan Retno Dwi Suyanti Ririn Denita Sinaga Rode Juwita Sinaga Said, Fahrezi Hasyim Sakinah, Sheila Saragih, Innovayani Sarah, Arina Sami Sarnika Simbolon Sary, Putri Yustika SATI, NAFFA Sembiring, Niki Arih Ersada Br Sembiring, Silvia Gressiela Br Siagian, Yusi Yulfani Siahaan, Suria Bersinar Sihombing, Cindy Monalisa Sijabat, Hotman Priwaldi Silaban, Regina Tesalonika Simamora, Theresia Valesita SIMANJUNTAK, PUTRINA Simanullang, Selafionita Simanullang, Vanessa Putri Rizky Simaremare, Happy G. Maritoma Simatupang, Septania Oniza Simorangkir, Rebecca Febi Permata Br Sinaga, Steven Siregar, Amita M. Siregar, Anggita Rahma Siregar, Eka Guspi Anti Sitorus, Francisca T. A Situmorang, Elsa Hasri Novensa Sri Adelia Sari Suryani Suryani Suryani Suryani Susanto Imam Rahayu Susanto Imam Rahayu Sutiani, Ani Syafira, Eka Ananda Syafitri, Amelia Syafriani Syafriani, Syafriani Syahputra, Ricky Andi Tama, Gita Citra Tania Evelin Tarigan, Anjany Tasya Br Tarigan, Aulya Nurfaza Br. Turnip, Yulika Hotrina Vebilla May Ningsih Veronika, Christy Chirona Waruwu, Julia Putri Santi Windayani, Neneng Wiranda Hasibuan Zai, Erniati Zubir, Moondra