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Hydrogen: Jurnal Kependidikan Kimia
Published by Universitas Pendidikan Mandalika
ISSN : 23386487     EISSN : 26563061     DOI : Prefix 10.33394
Core Subject : Science, Education,
Chemistry Education
Hydrogen: The Chemistry Education Journal published by the Chemistry Education Study Program which contains articles raised from the results of conceptual research and studies in chemistry and chemistry education including education and learning, device development, media and learning models.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 618 Documents
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Simulasi PHET: Efektivitasnya terhadap pemahaman konsep bentuk molekul Aulia Nurul Aziza; Dedi Irwandi; Evi Sapinatul Bahriah
Hydrogen: Jurnal Kependidikan Kimia Vol 9, No 2 (2021): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (622.966 KB) | DOI: 10.33394/hjkk.v9i2.4365

Abstract

Students have problems in understanding Students have problems in understanding of Molecule Shapes Theory, this can be caused by the lack of visualization of the spatial structure of molecules. So that requires teachers to be creative and innovative, for example by utilizing technology-based learning media. One of the technology-based media that can be used to deliver molecular form material is the PhET simulation media. The purpose of this research is to see the effectiveness of PhET simulation media on mastering the concept of molecular shapes. The research method used was quasi-experimental. The research design used was nonequivalent control group design. The sample in this study were students of class X IPA 1 totaling 39 students and X IPA 2 totaling 40 students. The research instrument used was a multiple choice test to see student learning outcomes and a questionnaire to determine student responses to the use of PhET media. Data were analyzed using SPSS version 25. Research results from the Independent Sample T-Test hypothesis test showed that learning using the PhET simulation media in the experimental class was more effective in improving students' understanding of concepts in molecular form material compared to book media.
Dampak Process-Oriented Guided-Inquiry Learning (POGIL) terhadap Pengetahuan Metakognitif Siswa pada Topik Asam-Basa Ivan Ashif Ardhana
Hydrogen: Jurnal Kependidikan Kimia Vol 8, No 1 (2020): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (216.48 KB) | DOI: 10.33394/hjkk.v8i1.2545

Abstract

Aim of this research is to investigate different impact of Process-Oriented Guided-Inquiry Learning (POGIL) and verification as learning approach at senior high school students’ metacognitive knowledge grade XI program IPA on acid-base topic. Research design used was quasi experimental. Hypothesis testing uses t-test with 5% (0,05) significance utilizing SPSS 21 application. Results show that (1) there is significance difference of students’ metacognitive knowledge that is taught by POGIL approach and verification, and (2) students that are taught by POGIL approach give better answer’s pattern of declarative, procedural, and conditional knowledge than students that are taught by verification approach.
Pengaruh “Malartamia” Sebagai Media Pembelajaran Kimia Melalui Strategi Team Game Tournament (Tgt) Terhadap Prestasi Belajar Siswa SMA Muhammadiyah Mataram Bakhtiar Ardiansyah; Wildan Wildan; Aris Doyan
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 2 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (115.052 KB) | DOI: 10.33394/hjkk.v1i2.627

Abstract

Penelitian ini bertujuan untuk: 1) mengetahui adanya pengaruh prestasi belajar siswa yang diajar dengan menggunakan media “Malartamia” dengan yang tidak menggunakan media “Malartamia” melalui strategi Team Game Tournament (TGT), 2) mengetahui adanya pengaruh prestasi belajar siswa yang mempunyai kemampuan awal tinggi yang diajar dengan menggunakan media “Malartamia” dengan yang tidak menggunakan media “Malartamia” melalui strategi Team Game Tournament (TGT), 3) mengetahui adanya pengaruh prestasi belajar siswa yang mempunyai kemampuan awal rendah yang diajar dengan menggunakan media “Malartamia” dengan yang tidak menggunakan media “Malartamia” melalui strategi Team Game Tournament (TGT), 4) mengetahui adakah interaksi antara siswa berkemampuan awal tinggi dengan siswa berkemampuan awal rendah yang menggunakan media “Malartamia” melalui strategi Team Game Tournament (TGT). Sampel penelitian adalah 2 kelas dari 3 kelas X SMA Muhammadiyah Mataram yang berjumlah 91 orang. Penelitian ini menggunakan desain faktorial 2 x 2. Data dianalisis dengan menggunakan teknik analisis varian (ANOVA) dua arah. Dari hasil analisis diperoleh Fhitung = 32,89 sedangkan harga Ftabel = 4,03 sehingga Fhitung > Ftabel. Hasil uji analisis varians menunjukkan pengaruh yang signifikan penggunaan media “malartamia” dalam pembelajaran kooperatif tipe TGT (Team Game Tournament) terhadap prestasi belajar siswa. Hasil uji lanjut dengan menggunakan uji t menunjukkan bahwa t hitung = 10,71 dan ttabel = 2,00. Dalam hal ini thitung > ttabel. sehingga ada pengaruh perbedaan kemampuan awal tinggi dan rendah terhadap prestasi belajar siswa. Selanjutnya dari hasil analisis data diperoleh Fhitung = 1,04 sedangkan harga Ftabel = 4,03. Berdasarkan data tersebut, maka harga Fhitung< Ftabel, sehingga menunjukkan bahwa tidak ada interaksi penggunaan media “malartamia”  dalam pembelajaran kooperatif TGT antara siswa berkemampuan awal tinggi dan rendah terhadap prestasi belajar siswa
Kadar Asam Klorogenat (CGA) Dalam Biji Kopi Arabika (Coffea Arabica) Asal Wamena, Papua Septiani Mangiwa; Alowisya Futwembun; Puteri M. Awak
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.455 KB) | DOI: 10.33394/hjkk.v3i2.690

Abstract

Chlorogenic acid (CGA) is one of chemical compound in coffee and class of polyphenolic compounds that have activity as antioxidant.  This study aims to determine the CGA contain in Arabica coffee beans from Wamena regency of Jayawijaya, Papua.  Coffee beans  were roasted by three roasting temperature i.e. 75, 150 and 2250 C while unroasted one was used as controls. Extraction was performed by soxhletation using metanol as  a solvent for 5 hours. Separation and  CGAcontent were determined using HPLC uses C-18 column, 150 mm length, 4,6 mm in diameter, with metanol-fosfat buffer 10 mM pH 2,6(30:70) as eluent, flow rate of 1 mL/minutes, injection volume of 20 µL and measured by spectrophotometer UV-Vis in 329 nm. The result of the study shows the CGAcontent  in treated beans with temperature roasting of 75, 150 and 2250C  respectively were 6,93 ; 9,33 and 7,12 % while the unroasted one was  7,73 %. The lowest CGA content was found in coffee beans roasted in 750C while the highest in 1500 C.
Pengembangan Bahan Ajar Ikatan Kimia Model Inkuiri dengan Strategi Konflik Kognitif Terhadap Kemampuan Berpikir Kritis Fahrurrozi Fahrurrozi; Hulyadi Hulyadi; Pahriah Pahriah
Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 1 (2019): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (823.826 KB) | DOI: 10.33394/hjkk.v7i1.1651

Abstract

Chemical bonding was one of the subjects considered difficult by students, because it had submicroscopic concept that learns about the formation of bonds an element that was quite difficult for students to understand. The development of teaching material in the form of teaching materials was seen as a solution to this problem. This study aimed to develop chemical bondinginquiry modelsteaching materials with conflict cognitive strategies towards critical thinking skills. This studywas development research with ADDIE (Analysis, Design, Development, Implementation, and Evaluation)model design. The development results were validated by three expert validators, one practitioner validator and ten IKIP Mataram students as students' limited test validators. Quantitative data from the results of feasibility validation and the results of the assessment of student attitudes toward critical thinking skills were analyzed by percentage formula and the results of effectiveness test data were calculated by N-gain. Qualitative data in the form of responses and suggestions for improvement from the validator was used as a consideration to make revisions to the instructional materials developed. In general, the validator's assessment of the results of the development obtained an average percentage of 83.80%, 85.71%, 88% and 85.71%. While the results of the analysis of effectiveness using the N-gain test obtained an average score of 0.6 with the medium category and analysis. This showed that the teaching materials developed were very feasible to proceed to a broader and more effective stage to foster critical thinking skills.
Efektifitas Penurunan COD Limbah Tempe Tahu Oleh Karbon Aktif Tongkol Jagung Yusran Khery; Nova Kurnia; Kahpiyati Kahpiyati
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 1 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (129.579 KB) | DOI: 10.33394/hjkk.v1i1.575

Abstract

Penelitian ini bertujuan untuk mengetahui efektifitas serbuk karbon aktif tongkol jagung dalam menurunkan kadar COD limbah cair industri tempe tahu. Sampel penelitian ini yaitulimbah cair pada di bak pembuangan perajin tempe tahu di Kekalik. Dalam penelitian ini, dipelajari efisiensi adsorpsi COD pada konsentrasi HCl 0, 5, 10, 15, dan 20 saat aktivasi karbon aktif; pada volume sampel 50, 150, dan 250; pada waktu kontak 30, 60, 90, 120, 150 menit; dan pada ukuran serbuk 50, 60, 100, 120 mesh, ukuran ayakan kopi, dan granul. Berdasarkan hasil penelitian diperoleh bahwa konsentrasi HCl dan volume sampel optimum berturut-turut yaitu 15% dan 150 mL dengan efisiensi penurunan COD sebesar 42,86%. Waktu kontak optimum yakni 90 menit dengan efisiensi sebesar 90%.Sedangkan ukuran serbuk karbon aktif yang paling baik menurunkan kadar COD yakni 120 mesh dengan efisiensi 47,22%. Semakin kecil ukuran serbuk aktif, efisiensi penurunan kadar COD limbah cair industri tempe tahu semakin besar.
Pengaruh Model Pembelajaran Problem Solving Dengan Pendekatan Saintifik Terhadap Keterampilan Proses Sains Dan Pemahaman Konsep Siswa Pada Materi Hidrolisis Garam Nia Ilyana; Khaeruman Khaeruman; Hulyadi Hulyadi
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 1 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.859 KB) | DOI: 10.33394/hjkk.v3i1.668

Abstract

Rendahnya keterampilan proses sains pada mata pelajaran kimia berdampak pada rendahnya pemahaman konsep kimia siswa. Hidrolisis garam merupakan salah satu materi kimia yang dianggap sulit oleh siswa karena  memiliki karakteristik yang abstrak sehingga membutuhkan kemampuan berpikir tinggi untuk memahaminya. Tujuan penelitian ini adalah untuk mengetahui pengaruh model pembelajaran problem solving dengan pendekatan saintifik terhadap keterampilan proses sains dan pemahaman konsep  siswa pada materi hidrolisis garam. Jenis penelitian ini adalah quasi eksperimental dengan sampel sebanyak dua kelas, teknik pengambilan sampel dilakukan secara cluster random sampling. Instrumen penelitian yang digunakan terdiri dari lembar observasi keterampilan proses sains yang dianalisis secara deskriptif dan soal tes objektif beralasan yang dianalisis secara statistik. Hasil analisis keterampilan proses sains pada kelas eksperimen lebih tinggi dibandingkan kelas kontrol dengan rata-rata nilai 78,97 > 77,36. Sedangkan hasil analisis pemahaman konsep pada kelas eksperimen lebih tinggi dari kelas kontrol dengan rata-rata nilai masing-masing sebesar 79 dan 70. Berdasarkan hasil uji one way anova diperoleh F hitung sebesar 5,07 karena F hitung > F tabel (5,07 > 4,06) maka dapat disimpulkan bahwa model pembelajaran problem solving dengan pendekatan saintifik berpengaruh terhadap keterampilan proses sains dan pemahaman konsep siswa pada materi hidrolisis garam.
TINGKAT PERANAN PEMBELAJARAN KIMIA DALAM MENDUKUNG GERAKAN SEKOLAH SEHAT, AMAN, RAMAH ANAK, DANMENYENANGKAN (STUDI KASUS) Yusran Khery; Pahriah Pahriah; Hasinarmi Hasinarmi
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (481.254 KB) | DOI: 10.33394/hjkk.v4i2.99

Abstract

This study aimed to determine the level of learning the role of chemistry in supporting a healthy school movement, a safe, child-friendly, and fun (a case study in SMAN3 Mataram). This study used qualitative design to find out how the learning process chemistry students in the school to support the movement of healthy, safe, child friendly, fun environment SMAN3 Mataram. Subject of research was teachers and students learning chemistry class III. The instrument used in this study was the observation of the environment of the school and the learning process, interviews with teachers to find out the learning process in learning chemistry related to school environment healthy, safe, child friendly and pleasant and the student questionnaire to determine the level of the role of chemistry learning in support of the movement schools healthy, safe, child friendly, and fun during the process of chemical learning. The results of the study was  indicate that the rate of learning the role of chemistry in supporting a healthy school movement, a safe, child-friendly, and fun can improve student learning SMAN 3 Mataram.
Pengembangan Bahan Ajar Reaksi Redoks Dan Elektrokimia Berbasis Problem Posing Agung Madhi Prayoga; Citra Ayu Dewi; ahmadi ahmadi
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.236 KB) | DOI: 10.33394/hjkk.v2i2.650

Abstract

Pengembangan bahan ajar ini didasari oleh hasil observasi tentang masalah pendidikan seperti pembelajaran konvensional dan bahan ajar yang masih kurang mengarah pada keaktifan dan kemandirian siswa. Selain itu, kondisi kelas dan tingkat kesulitan materi kimia khususnya reaksi redoks dan elektrokimia berdasarkan hasil investigasi awal mendapat interpretasi sulit dengan persentase 70%. Oleh karena itu, pengembangan bahan ajar penting dilakukan agar dapat mempermudah dan memperluas wawasan tentang materi reaksi redoks dan elektrokimia secara konvensional. Bahan ajar ini dikembangkan dengan berbasis model problem posing. Pengembangan ini bertujuan untuk mengetahui bentuk dan kelayakan bahan ajar reaksi redoks dan elektrokimia berbasis problem posing. Model pembelajaran problem posing memiliki berbagai tahapan yaitu (1) Motivasi, (2) Penguraian secara kontekstual, (3) Penjabaran dan penjelasan masalah, (4) Merumuskan masalah dengan membuat soal dan (5) Menjawab soal dan merangkum seruluh isi materi. Model pengembangan yang digunakan adalah model pengembangan Plomp. Tahapan penelitian dari model tersebut meliputi fase investigasi awal, fase desain, fase realisasi/konstruksi, fase tes, evaluasi dan revisi serta fase implementasi. Hasil pengembangan  diperoleh pada fase tes, evaluasi dan revisi menunjukan validasi bahan ajar dari validator dengan persentase rata-rata 87,25% dan interpretasi sangat layak, validasi bahan ajar dari 10 siswa dengan persentase rata-rata 81% dan interpretasi sangat layak serta validasi dari guru bidang studi dengan persentase 81,25%. Dengan demikian, bahan ajar yang dikembangkan ini dinyatakan layak untuk digunakan sebagai sumber referensi dan media pembelajaran.
Pemanfaatan Karbon Baggase Teraktivasi Untuk Menurunkan Kadar Logam Tembaga Pada Limbah Kerajinan Perak Di Lombok Tengah Dahlia Rosma Indah; Safnowandi Safnowandi
Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 1 (2018): Hydrogen: Jurnal Kependidikan Kimia
Publisher : Universitas Pendidikan Mandalika Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.682 KB) | DOI: 10.33394/hjkk.v6i1.1601

Abstract

Copper metal levels in silver craft waste can cause health problems in humansand pollute the surrounding environment. One method of processing wastewateris the adsorption technique using activated carbon dioxide. The first step is tofirst determine the copper metal content in silver handicraft waste in UnggaVillage, Central Lombok. Furthermore, the waste water is contacted withactivated carbon. The production of activated bagasse carbon consists of threestages, namely first dehydration by burning bagasse until it turns into carbon,second carbonation which is heating temperature of 500ºC, carbon yields of 100-200 mesh and third, activation by immersing 50 grams of carbon in 500 mL 15%NaOH during 12 hours. After that the carbon is dried at 110ºC and finally heatedat 500ºC for 1 hour. The bagasse carbon that has been made is put into 25 mL ofwaste water sample with a mass of 2 grams of adsorbent. The sample is thenstirred at various contact times of 30, 60, 90, 120 and 150 minutes at a speed of180 rpm using a batch system. The optimum contact time and concentration areused to calculate the efficiency of decreasing copper metal content by calculatingthe difference in copper metal content before adsorption and after adsorptionusing activated carbon dioxide. The concentration of all Cu (II) metals wasanalyzed using Atomic Absorption Spectrophotometer (AAS). From the researchit was found that the copper metal content in the sample was 14.5710 ppm. Theoptimum contact time for copper metal adsorption is at 120 minutes contact timewhich results in optimum adsorption efficiency in ferrous metals, namely84.88%.

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