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INDONESIA
Jurnal Pendidikan Kimia (JPKim)
Published by Universitas Negeri Medan
ISSN : 20853653     EISSN : 25493116     DOI : 10.24114
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science
Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.
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Articles 12 Documents
 1   2 
Search results for , issue "Vol 8, No 3 (2016): Desember" : 12 Documents clear
The Application of Problem Based Learning Model Integrated Guided Inqury Model Using Computer Based Media on Salt Hydrolysis Learning for High School Students Improve Learning Outcomes Class XI Science in Medan Eva Fadillah; Ramlan Silaban; Iis Siti Jahro
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (415.47 KB) | DOI: 10.24114/jpkim.v8i3.4921

Abstract

Abstract. This study aims to analyze (1) Differences in chemistry learning outcome of students who got a learning model of Direct Instruction (DI), Problem Based Learning (PBL) Integrated Guided Inquiry (GI), and Problem Based Learning (PBL) Integrated Guided Inquiry (GI) using a computer-based media. This research is experimental. The population is all high school students of class XI in the city of Medan in Academic Year 2013/2014. The sampling technique using cluster random sampling, namely SMAN 4, SMAN 14 and SMAN 21 Medan respectively of 3 classes. The research instrument in the form of test results to learn chemistry and observation sheet student character. The data analysis technique used is the analysis of variance (ANOVA) one direction (one way ANOVA) with SPSS 20 for windows at significance level α = 0.05. Based on the results of data processing, is obtained that (1) There are differences in learning outcomes between students who received the chemistry applied learning models. Keywords: PBL, GI and DI, learning outcomes, character
The preparation and characterization of Sinabung volcanic ash as silica based adsorbent Lisnawaty Simatupang; Devi Devi
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.15 KB) | DOI: 10.24114/jpkim.v8i3.4478

Abstract

Abstract. Synthesis of silica gel with sol-gel method has been carried out by utilizing the volcanic ash from Mount Sinabung taken from Berastepu village, Simpang Empat, Karo within 1.5 km from the summit of Mount Sinabung. Volcanic ash is one of the largest source of silica, potentially as materials for silica gel. Synthesis of silica gel in this study conducted by sol-gel method. Volcanic ash didekstruksi with 4M NaOH solution and gel formation with 3M HCl solution. Characterization of silica performed by AAS analysis, FTIR and XRD. Silica levels obtained in this study amounted to 17.85%. Based on the results of using FTIR analysis showed a cluster Si-O-Si and Si-OH stating that the silica adsorbent was successfully created. Characterization using XRD showed that the silica produced has a low degree kekristalan (amorphous form).Keywords: adsorbents, silica, volcanic ash mount Sinabung

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