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Hydrogen: Jurnal Kependidikan Kimia
Published by IKIP Mataram
ISSN : 23386487     EISSN : 26563061     DOI : -
Core Subject : Science, Education,
Chemistry Education
Hydrogen: Jurnal Kependidikan Kimia diterbitkan oleh Program Studi Pendidikan Kimia yang memuat tulisan yang diangkat dari hasil penelitian dan kajian konseptual di bidang Kimia dan Pendidikan Kimia.
Arjuna Subject : -
Articles 100 Documents
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Upaya Menurunkan Kadar Ion Logam Besi Pada Air Sumur Dengan Memanfaatkan Arang Ampas Tebu Indah, Dahlia Rosma; Hendrawani, Hendrawani
Hydrogen: Jurnal Kependidikan Kimia Vol 5, No 2 (2017): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (555.516 KB) | DOI: 10.33394/hjkk.v5i2.1590

Abstract

The levels of iron metal ions in the well water can cause health problems,causing the yellow color on the walls of the bathroom tub and the yellowspots on the clothes. One way of water treatment is by adsorption techniqueusing charcoal from bagasse. The first step is to first determine the level ofiron metal ions in the well water in the village of Palempat, BatulayarDistrict, West Lombok. Furthermore, the well water is contacted with sugarcane bagasse. The manufacture of amphibians includes the samplepreparation process, wash with water, drying in the sun, and the refining at250ºC for 2.5 hours then sieved. The sugarcane bagasse that has been putinto 100mLsampelair well with a mass of 2 grams of adsorbent. Samples werethen stirred at contact time variations of 30, 60, 90, 120 and 150 minutes at180 rpm using a batch system. The best contact time used to calculate theefficiency of decreasing iron metal ion content is by calculating the differenceof iron metal ions before adsorption and after adsorption using charcoal ofbagasse. From the research, it was found that iron metal ion content in thesample was 0.1683 ppm. The optimum contact time on iron metal ionadsorption is at 120 minutes contact resulting in optimum adsorptionefficiency in iron metal that is 65.83%.
Penentuan Kadar Sianida Daun Singkong Dengan Variasi Umur Daun Dan Waktu Pemetikan Kurnia, Nova; Marwatoen, Fatmi
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 2 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (124.996 KB) | DOI: 10.33394/hjkk.v1i2.636

Abstract

Telah dilakukan penelitian untuk mengetahui kadar sianida yang terkandung dalam daun singkong. Daun singkong yang dijadikan sampel yaitu daun muda dan daun tua yang masing-masing dipetik pada pagi hari maupun sore hari. Penentuan kadar sianida dilakukan dengan metode titrasi pembentukan kompleks sianida. Hasil penelitian menunjukkan kadar sianida pada daun singkong muda dan tua yang dipetik pada pagi hari yaitu 3,46% dan 3,67%. Sementara kadar sianida pada daun singkong tua yang dipetik sore hari yaitu 2,81% dan 2,91%.
Implementasi Think Aloud Pair Problem Solving (Tapps) Berbantuan Media Kartu Bergambar Terhadap Kemampuan Pemecahan Masalah DanHasil Belajar Kognitif Siswa Junita, Baiq Aninda
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.574 KB) | DOI: 10.33394/hjkk.v3i2.685

Abstract

Penelitian ini bertujuan untuk mengetahui perbedaan kemampuan pemecahan masalah dan hasil belajar kognitif siswa yang dibelajarkan dengan model TAPPS berbantuan media kartu bergambar dengan siswa yang dibelajarkan dengan model konvensional. Jenis penelitian ini adalah penelitian quasi eksperimental dengan desain penelitian ” posttest only control group design”. Teknik pengambilan sampel yang digunakan adalah simple random sampling sehingga terpilih siswa kelas X2­sebagai kelas eksperimen (Model TAPPS berbantuan media kartu Bergambar) dan kelas X3 sebagai kelas kontrol (Model Konvensional).Hasil penelitian menunjukkan bahwa kemampuan pemecahan masalah dan hasil belajar kognitif siswa yang dibelajar dengan model pembelajaran (TAPPS) berbantuan media kartu bergambar  lebih tinggi dari pada siswa yang dibelajarkan dengan modelpembelajaran konvensional. Dengan demikian, dapat disimpulkan bahwa ada perbedaan kemampuan pemecahan masalah dan hasil belajar kognitif antara siswa yang dibelajarkan dengan model (TAPPS) berbantuan media kartu bergambar dengan siswa yang dibelajarkan dengan model konvensional.
Korelasi Tingkat Penguasaan Kimia Dasar II Terhadap Prestasi Belajar Dasar-Dasar Kimia Analitik Pada Mahasiswa Jurusan Pendidikan Kimia IKIP Mataram Kurniadin, Arif
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 1 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (61.989 KB) | DOI: 10.33394/hjkk.v1i1.579

Abstract

Mata kuliah Kimia Dasar II merupakan salah satu mata kuliah wajib bagi mahasiswa jurusan pendidikan kimia IKIP Mataram. Mata kuliah Kimia Dasar II sebagai prasyarat memprogramkan mata kuliah Dasar-Dasar Kimia Analitik.Tujuan penelitian ini adalah untuk mengetahui hubungan nilai Kimia Dasar II dengan nilai Dasar-­Dasar Kimia Analitik. Adapun populasi dalam penelitian ini adalah mahasiswa yang telah mengikuti mata kuliah Kimia Dasar II sejumlah 547 orang yang tersebar dalam tiga angkatan, yaitu angkatan 2007 sebanyak 115 orang, angkatan 2008 sebanyak 172, angkatan 2009 sebanyak 220 orang, sehingga sampel yang di ambil sebanyak 127 orang yang ditentukan dengan teknik random sampling yaitu sebesar 25% yang diambil dari tiga angkatan. Dari hasil perhitungan statistik terhadap data nilai Kimia Dasar II dengan nilai Dasar-Dasar Kimia Analitik diperoleh rhitung 0,04 yaitu lebih besar dari rtabel 0,176 (0,04 > 0,176) pada taraf signifikan 5%. Hal ini menyatakan bahwa ada korelasi yang signifikan antara nilai Kimia Dasar II dengan prestasi belajar Dasar-Dasar Kimia Analitik, sehingga konstribusi Kimia Dasar II terhadap prestasi belajar Dasar-Dasar Kimia Analitk sebesar 0.0016%.
Pengaruh Ukuran Serbuk Pada Aktivasi Tanah Liat Dari Tanak Awu Terhadap Daya Adsorpsinya Pada Pemurnian Minyak Goreng Bekas Nufida, Baiq Asma; Kurnia, Nova; Kurniasih, Yeti
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.201 KB) | DOI: 10.33394/hjkk.v2i2.660

Abstract

This research was aimed to get the effect of particel size of activated natural clay from Tanak Awu to their adsorption capacity for increase reused cooking oil quality. At previous research we done the activation of natural clay using acid (HCl) and got an optimal concentration of acid at 1 molar. Natural clay was grinding until particel size at 50 mesh, 60 mesh and 100 mesh then it was characterized in specific surface area by methylen blue methods and also acidity surface by acid base titration. Then activated natural clay was applied for purifying reused cooking oil by analyzing water content, acid number and peroxide number. The result showed that there are the effect of particel size of natural clay to acidity surface and specific surface area. While the adsorption capacity of natural clay on purifying reused cooking oil got that optimal particel size of activated natural clay at 60 mesh which getting the decrease of water content, acid number and peroxide number by following reach was 89,13%, 58,61% and 60,52%.
EFEKTIVITAS FOTOREDUKSI ION Cu(II) TERKATALISIS TiO2 DALAM LIMBAH CAIR INDUSTRI KERAJINAN PERAK DI DESA UNGGA KEC. PRAYA LOMBOK TENGAH Husnul Hatimah, Husnul Hatimah
Hydrogen: Jurnal Kependidikan Kimia Vol 5, No 1 (2017): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (226.822 KB) | DOI: 10.33394/hjkk.v5i1.104

Abstract

This research has been done to study the effect of addition of TiO2 photocatalyst in liquid waste of silver industry in Ungga Village, Kec. Praya Kab. Central Lombok on the effectiveness of photoreduction of Cu (II) ions which are catalyzed by TiO2. The photoreduction process is carried out by irradiating liquid waste containing Cu (II) ions without or with the addition of TiO2 photocatalyst powder in a closed reactor equipped with UV lamps. The photoreduction process conditions are 50 mL of silver waste containing Cu (II) with reaction time for 24 hours and a mass of TiO2 20 mg at each 10 ppm Cu (II) ion concentration. The photoreduction results are determined by the difference in the concentration of the starting Cu (II) ions with the residual Cu (II) ion concentration in the silver craft waste without or with the addition of TiO2 photocatalyst. Furthermore, the data obtained were compared to the results of photoreduction of Cu (II) ions pure TiO2 laboratory scale. The amount of metal in the mixture was determined by Atomic Absorption Spectrophotometric Method (AAS). The results showed that in silver handicraft waste containing Cu (II) ions, the addition of TiO2 can increase the effectiveness of the Cu (II) ion photoreduction from 6.57% to 33.38%, which begins with the adsorption process. The other ions cause inter-reduction competition metals so as to decrease the effectiveness of TiO2 catalysed Ti (II) ionic ferrication in silver handicrafts waste in Ungga Village Kec. Praya Kab.central Lombok
Pengaruh Strategi Pengembangan Keahlian Berpikir Divergen Dengan STAD Terhadap Karakter Berpikir Divergen Konvergen dan Kemampuan Berpikir Siswa Khery, Yusran; Supriani, Destri
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 1 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.098 KB) | DOI: 10.33394/hjkk.v2i1.643

Abstract

Tujuan penelitian ini untuk mengetahui ada tidaknya pengaruh strategi pengembangan keahlian berpikir divergen dengan STAD (STAD-Divergen) terhadap karakter berpikir divergen konvergen dan kemampuan berpikir divergen siswa kelas X SMA Islam Al-Azhar NW Batulayar pada materi Hidrokarbon. Populasi dalam penelitian ini adalah siswa kelas X di SMA Islam Al-Azhar NW Batulayar tahun ajaran 2012/2013. Penelitian ini menggunakan metode Eksperimen. Pengumpulan data dalam penelitian ini dilakukan dengan metode angket, dan tes. Analisis data dilakukan dengan statistik parametrik perbandingan dua sampel, uji t-sampel bebas dan deskriptif kualitatif menggunakan program SPSS 16.0 for windows. Hasil uji Hipotesis ini membuktikan Strategi pengambangan keahlian berpikir divergen (STAD-Divergen) tidak berpengaruh terhadap karakter berpikir divergen dan konvergen, tetapi berpengaruh terhadap kemampuan berpikir divergen siswa.  
Efektivitas Penerapan Strategi Everyone is a Teacher Here Untuk Meningkatkan Prestasi Siswa Kelas VIII.A SMPN 1 Gunungsari Pada Mata Pelajaran IPA Ukir, Lalu Ukir
Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 1 (2018): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (764.206 KB)

Abstract

This research was conducted at Gunungsari 1 Public Middle School with the aimof knowing the effectiveness of the use of Everyone is A Teacher Here strategy inlearning activities, so that how far the results of student learning achievementimproved by using the learning strategy. This type of research is classroomaction research (CAR) ), which is carried out by the cycle of persiklus withseveral stages, namely: planning, implementation, observation and reflection.The data in this study are student learning activities and student learningoutcomes. The results of the study showed that the application of BeajarEveryone is a Teacher Here strategy was effective to improve students' learningachievement in grade VIII.A from cycle I to cycle II with an average score of 70 ,48 in the first cycle to 77.27, and classical completeness from the first cycle tothe second cycle experienced a significant increase of 59.38 to 87.5 while theresults of the analysis of the N-Gain test were 0.32 with the moderate category.Conclusions from the results of the study this is the application of the learningstrategy Everyone is a Teacher Here effectively increases the learning activitiesof Gunungsari 1 Junior High School students in class VIII.A so that learning ismore focused, absorbs more subject matter and is more fun for students. So itcan be concluded that the application of Everyone's a Teacher Here learningstrategy can effectively improve science learning achievement of students ofGunungsari 1 Junior High School class VIII.A from cycle I to cycle II.
PENGEMBANGAN MODUL LEARNING CYCLE 5E BERORIENTASI GREEN CHEMISTRY PADA MATERI SISTEM KOLOID UNTUK PENINGKATKAN LITERASI SAINS SISWA Kimianti, Febyarni; Suryati, Suryati; Dewi, Citra Ayu
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1330.891 KB) | DOI: 10.33394/hjkk.v4i2.88

Abstract

One of critical problems faced by students in learning process is lack of teaching materials. Teaching materials are selected by the teacher, and mostly they focuson a review of materials and problem solving, without considering environment aspect in learning. Therefore, the attitude of student toward environment and awareness of science are lacking. Ideally, students must be equipped with modules that can stimulate them to learn and have environment awareness. The purpose of this study was to determine the feasibility and effectiveness of a developed module. The module was developed by adopting ADDIE model, consisting of 1) analyze, 2) design, 3) develop, 4) implementation, and 5) evaluation. The study was conducted on class XII IPA3 at SMAN 1 Batukliang. At development stage, the validation results showed that the module is very feasible for use, as suggested by expert evaluation score of 96.04%, practitioner evaluation of 97.77%, as well as average score from students of 97.27%. Result of N-gain test shows that the average N-gain 0.8 demonstrating the remarkable effectiveness of module in improving the scientific literacy of students. Overall, it can be concluded that the developed module was highly feasible for use and can help to improve scientific literacy of students.
Kadar Asam Klorogenat (CGA) Dalam Biji Kopi Arabika (Coffea Arabica) Asal Wamena, Papua Mangiwa, Septiani; Futwembun, Alowisya; Awak, Puteri M.
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP 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.

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