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Jurnal Pendidikan Kimia (JPKim)

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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 352 Documents

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The implementation of learning model and virtual lab toward learning outcome of chemistry education Gulmah Sugiharti; Abdul Hamid; Mukhtar Mukhtar
Jurnal Pendidikan Kimia (JPKim) Vol 11, No 3 (2019): December
Publisher : Pascasarjana Universitas Negeri Medan

The abundance of chemical concepts and general chemistry lessons that tend to be monotonous and have not yet considered the ability of mathematical thinking to cause problems in learning that resulted in low student learning outcomes. Even though the concept can be related to students' daily lives by applying effective learning models in accordance with teaching materials. The purpose of this study was to determine whether there were significant differences in learning outcomes between the classes taught with PBL models and the classes taught in the DI model in the General Chemistry course at the Chemistry Education department of FMIPA Unimed. The population consists of 2 classes, each of which consists of 26 students taught with different learning models. After the data is tested normal and homogeneous by using SPSS, the hypothesis is tested using t test. Based on the results of the hypothesis test, it is known that the value of Sig. 0.065 <0.10. So it was said that there were significant differences in learning outcomes of classes taught with PBL models with classes taught with the DI model in General Chemistry courses. This study concludes that for the General Chemistry subject learning, it is better to use the PBL model than the DI model.Keywords: DI model; general chemistry; project-based learning model; virtual lab

Development of Lectora Inspire as Interactive Multimedia Chemistry Learning in Senior High School Roza Linda; Erviyenni Erviyenni; Asmadi M. Noer; NurAzlina Oktavianti; Novia Sellyna
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: Research development of LectoraInspire Interactive Multimediafor Salt Hydrolysisand Rate of Reactiontopics aims to getavalidand practical learning media. The researchmethodwas ResearchandDevelopment withPlompmodel in LectoraInspire Interactive Multimediafor Salt Hydrolysistopic and Four-D model forReaction Ratetopic. Both Media werevalidated bythree validators andthelimitedtrialbypractitioners (users).The results showed an average score of 96.05% validator ratings for Lectora Inspire interactive multimedia on the topic of salt hydrolysis and 95.63% for interactive multimedia on the topic of reaction rate.The data analysis is based on questionnaire responses of teachers and students each earned an average score of 96.67% and 97.3% for Lectora Inspire on the topic reaction rate, 98.3% and 96.5% for Lectora Inspire on the topic Hydrolysis Salt. From the results of the average overall score of validation and testing of media-based learning Lectora Inspire on the topic of reaction rate and hydrolysis Salt were valid and can be used as a learning media.Keywords:interactivemultimedia, lectorainspire, salthydrolysis, rate reaction

Need analysis for the development of chemical literation integrated problem-solving module Rodi Edi; Maefa Eka Haryani; Eka Ad’hiya
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 1 (2021): April
Publisher : Pascasarjana Universitas Negeri Medan

This research is a descriptive survey research to analyze student needs for chemical literation integrated problem solving modules. The questionnaire was given to 89 active students of chemistry education at Sriwijaya University who were selected using a non-probability sampling technique. The results of the questionnaire were then analyzed using descriptive statistical tests. The results of this study indicate that students understand the qualifications needed as an undergraduate and are in the process of achieving this, and they agree to develop problem-solving integrated chemical literacy based basic chemistry modules as teaching materials that can help them to achieve the competences.Keywords: Chemical literation, Problem-Solving, Module, Chemistry

OPTIMALISASI pH UNTUK MENINGKATKAN EFEKTIFITAS DAN SELEKTIFITAS ADSORBEN HIBRID SILIKA PADA SIMULTAN ION LOGAM DIVALENT Zn(II) DAN Cd(II) DENGAN METODE EKSTRAKSI FASE PADAT Lisnawaty Simatupang; Ratna Sari Dewi; Boston Sidabutar
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 3 (2014): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstrak Telah dilakukan penelitian tentang pembuatan adsorben hibrid silika kitosan dan aplikasinya untuk menyerap logam berat Zn(II) dan Cd(II). Silika diperoleh dari abu sekam padi, sedangkan kitosan diperoleh dari kulit udang. Pada penelitian sebelumnya telah dilakukan bahwa perbandingan silika kitosan yang optimum yaitu 20:4% (20 mL larutan natrium silikat : 0,4 gram kitosan dalam 10 mL asetat 2%) dengan luas permukaan 189,405 m2/g. Adsorpsi simultan Zn(II) dan Cd(II) dilakukan dengan metode ekstraksi fase padat (EFP) yang dilakukan dengan variasi pH larutan 4, 5, 6, 7, 8 yang bertujuan untuk menentukan pH optimum dalam proses adsorpsi. Hasil pengukuran dengan menggunakan SSA menunjukkan bahwa Jumlah ion logam Zn(II) dan Cd(II) teradsorpsi maksimum pada pH adsorpsi = 6, dengan jumlah ion logam Zn(II) yang teradsorp lebih besar dibandingkan dengan ion logam Cd(II). Jumlah logam yang teradsorp pada pH 6 untuk logam Zn(II) adalah 44,96 mg/L, sedangkan untuk logam Cd(II) adalah 0,56 mg/L. Metode Ekstraksi Fase Padat (EFP) dengan menggunakan adsorben hibrid silika kitosan lebih selektif dan efektif dalam menyerap ion logam Zn(II) yang mampu mengadsorpsi hingga mencapai 20,51% sedangkan untuk ion logam Cd(II) hanya 0,3%. Kata Kunci : adsorben, hibrid silika kitosan, pH, ekstraksi fase padat (EFP)

Conversion of avocado seed oil into liquid fuel fraction through catalytic cracking process using CuO/ZAA catalyst Junifa Layla Sihombing; Ahmad Nasir Pulungan; Dewi Purnama Sari; Moondra Zubir; Rini Selly
Jurnal Pendidikan Kimia (JPKim) Vol 9, No 2 (2017): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Penelitian Konversi minyak biji alpukat menjadi fraksi bahan bakar cair melalui proses catalytic cracking menggunakan katalis zeolit alam aktif terimpregnasi oksida logam Cu (CuO/ZAA) bertujuan untuk menghasilkan produk bahan bakar cair setaraf fraksi biogasoline dan biodiesel. Penelitian ini telah dilakukan dengan 3 tahapan utama yaitu 1) Ekstraksi Minyak Biji Alpukat, 2) Preparasi dan Karakterisasi Katalis CuO/ZAA, 3) Catalytic Cracking Minyak Biji Alpukat dengan Katalis ZAA dan CuO/ZAA pada temperatur proses 450oC. Hasil konversi pada katalis ZAA dan katalis CuO/ZAA berturut-turut sebesar 8,39 % dan 10,32% untuk produk cair, 0,83% dan 0,99% untuk kokas dan 56,89 % dan 88,69% untuk residu. Dari analisis GC diperoleh selektivitas katalis ZAA dan CuO/ZAA berturut-turut adalah 61,70% dan 56,34% untuk fraksi bensin, 4,82% dan 10,88% untuk fraksi diesel dan 33,48% dan 32,78% untuk fraksi minyak berat. Dengan demikin disimpulkan bahwa impregnasi oksida logam CuO pada bahan pengemban zeolit sebagai katalis (CuO/ZAA) meningkatkan aktivitas katalitik katalis, namun selektivitas katalis CuO/ZAA terhadap fraksi bensin lebih rendah dibandingkan dengan katalis ZAA.Kata kunci: katalis, catalytic cracking, minyak biji alpukat, CuO/ZAA, fraksi bahan bakar

Penerapan Model Quantum Teaching Menggunakan Media Peta Konsep dalam Pembelajaran Struktur Atom di Kelas X SMA Bajoka Nainggolan; Ruth Dharmayana Sinaga
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 3 (2015): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This study aims to determine learning outcome and collaborative character of students who are taught with Quantum Teaching Learning model using concept maps media on Atomic Structure. Research population is science students of grade X , and samples selected were 30 students of experimental and control classes respectively. The test instrument 20 multiple choice questions, and a non-test observation sheet. Soft ware data is processed with SPSS 16.0 for Windows, acquired pre-test experimental class = control, post-test experimental> control (90 > 85). The mean gain experimental > control (0.805 > 0.693), improvement of learning outcomes experimental > control (80.5% > 69.6%). Hypothesis test (α = 0.05) t test ≥ t tab.. (5.563 > 0.687), mean improvement of learning outcomes chemistry student with QT > conventional. The mean of the experimental character of student collaboration 67.75 (good), control 57.00 (enough). Correlation of learning outcomes with student collaboration experiment 90.4% (very high), controls 60.5% (high), QT contribution to the learning outcomes and cooperation experimental class 81.7%, 36.6% control. Conclusions: The increase in the value of learning outcomes chemistry atomic structure and character of students taught by cooperative learning model QT higher than conventional methods. Keywords: quantum teaching learning, media concept map, atomic structure

Pengembangan Bahan Ajar Kimia Materi Larutan Asam dan Basa Berbasis Chemo Edutainment Untuk Siswa SMK TI Kelas XI Chairiah Chairiah; Albinus Silalahi; Wesly Hutabarat
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 2 (2016): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This research aims to know the feasibility of Chemistry Materials for grade eleventh SMK in the second semester for acids and bases solution topic that exist today in accordance with BSNP (National Education Standards Beureu); to know the feasibility of Chemistry Materials based chemo edutainment for students grade eleventh SMK in the second semester for acids and bases solution topic in accordance with BSNP (National Education Standards); to know the differences of increase learning outcomes that learned with Chemistry Materials based chemo edutainment for acids and bases solution topic compared than learning outcomes that learned with Chemistry Materials without the development; and to know the differences of increase students motivation learning outcomes that learned with Chemistry Materials based chemo edutainment for acids and bases solution topic compared than students motivation learning outcomes that learned with Chemistry Materials without the development. This type of research was development using a model ADDIE (Analysis, Design, Development, Implementation and Evaluations). The population in this research was all of students grade eleventh SMK. The sample in this research was SMK Negeri 1 Stabat much as two classes and have totaling students is 64 . The results showed that: (1) the chemistry materials publisher X and Y for acids and bases solution topic in accordance with BSNP (National Education Standards) is quite feasible, but there are some that need to be developed; (2) Chemistry materials that developed for acids and bases solution topic has a decent based on the feasibility of standardizing the contents is 4.11, Language feasibility is 4.24, Presentation feasibility is 4,16 Graphically feasibility is 4,42; (3) there are significant differences in student learning outcomes with the implementation of the chemistry materials based chemo edutainment was better than the learning outcomes of students with Chemistry materials without the development (Sig <α and tcount> t table) is 0.00 <0.05 and 4.013> 1.694; (4) the increase of students motivation learning outcomes with the implementation of the chemistry materials based chemo edutainment was higher (77,92) than the students motivation learning outcomes with Chemistry materials without the development (63,78).Keyword: chemistry teaching materials, solution of acids and bases, chemo edutainment, learning outcomes, motivation to learn

Implementation auditory-intellectually-repetition of redox material to improve learning outcomes in class X high school students 1 Krueng Barona Jaya Abdul Gani; Maya Paramitha Mirda; Ade Ismayani
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 3 (2020): December
Publisher : Pascasarjana Universitas Negeri Medan

Students have different levels of knowledge that can affect learning outcomes. The implementation of learning models in the classroom can also affect student learning outcomes. This study aims to determine how the effect of the implementation of the Auditory Intellectually Repetition (AIR) learning model on redox material in class X SMAN 1 Krueng Barona Jaya. This type of research is descriptive and the approach used is a qualitative approach. This study focuses on several aspects, namely learning outcomes, activities, and students' responses. The subjects in this study were students in class X-MIA1 SMAN 1 Krueng Barona Jaya. Data collection tools used were student activity observation sheets, evaluation questions, and student response questionnaires. Data were collected using these three tools and then the percentage of the results was seen. The results of the analysis of students' learning completeness were obtained that 80% of students had completed and 20% of students did not complete. The results of observations of students 'activities were seen to have developed from the first meeting, namely 92.11% to 93.75% at the second meeting, while the results of the students' responses were obtained an average percentage of 85.56%. This shows that the implementation of the AIR learning model received a positive response from students and can be used as an effective model to use in redox material.Keywords: Auditory intellectually repetition, Learning outcomes, Student activities

ISOLASI DAN KARAKTERISASI SENYAWA METABOLIT SEKUNDER FRAKSI ETIL ASETAT DARI KULIT BATANG TUMBUHAN Bauhinia purpurea L Ardiansyah Ardiansyah; Herdini Herdini; Abdullah Abdullah
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 1 (2015): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract Isolation and characterization secondary metabolite of ethyl acetate fraction from Bauhinia purpurea L stem bark has been conducted. Bauhinia purpurea L belonging to biggest family of flowering plant in Asia. This plant was choosed as study sample evidence remedy effect for some disease like ulcer, cough, tumor, puffing, and snakebite. Isolation conducted by extraction and chromatograph method. Extraction by maceration technique used non polar and semipolar solvent alternally, n-hexane, dichloromethane, and ethyl acetate. The extract separated by liquid vacuum, coloum, and flash chromatograph until obtained pure compound. The melting point of compound was determined by John-Fisher apparatus.The compound structure was determined by UV-Vis, IR, 13C-NMR spectroscopic.The compound spectroscopy data was compared with standard compound data.Extraction resulted n-hexane fraction, dichloromethane fraction, and ethyl acetate fraction. Separation of ethyl acetate fraction resulted white crystalline powder and has melting point 220-2210C. Evidence on spectroscopy data were estimated the compound was a stigmasterol glycoside.Key word : Bauhinia purpurea L; stem bark; ethyl acetate; stigmasterol glycoside

Comparison of Titanium Dioxide Nanocrystal with Hydrothermal Method and P25 Degussa for Photocatalytic Arsenic Diana Rakhmawaty E; Astri Aldelina; Atiek Rostika N
Jurnal Pendidikan Kimia (JPKim) Vol 9, No 1 (2017): April
Publisher : Pascasarjana Universitas Negeri Medan

Abstract: Arsenic is one of 10 chemicals which is harmful to human health, according to WHO. Arsenic that harmful to human health is generally in the form of inorganic compounds with oxidation number of 3 (As(III)). One of the best known method to remediate As(III) is an oxidation method. Titanium dioxide (TiO2) can be used as a photocatalyst to oxidize As(III). The photocatalytic activity of TiO2 is highly dependent on the size and composition of the crystal phase. Smaller size of TiO2 crystal can be obtained by using hydrothermal method. This study aimed to compare the synthesized TiO2 with P25 Degussa to As(III) reduction. Materials used are TiCl4 as a precursor and H2SO4 and t-butanol as solvents. The crystal structure of synthesized TiO2 is a mixture of anatase and rutile with a greater composition of anatase than rutile. The TiO2 crystal size is calculated using scherrer equation and showed that the crystal size is less than 60 nm. The ability of synthesized TiO2 using H2SO4 2.0 M in the reduction of As(III) concentration is 72% exceeded the capability of P25 Degussa is 35%. Keywords: As(III), hydrothermal, H2SO4, t-butanol, TiO2 photoactivity

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