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JKPK (Jurnal Kimia dan Pendidikan Kimia)
Published by Universitas Sebelas Maret
ISSN : 25034146     EISSN : 25034154     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
The JKPK (Jurnal Kimia dan Pendidikan Kimia) is a national journal, published three times a year in April, August, and December, containing research articles on Chemistry and Chemistry education.
Arjuna Subject : -
Articles 255 Documents
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Implementation of The Video Project with Distance Learning on The Basic Chemistry Course Hanifah Setiowati; Lenni Khotimah Harahap; Julia Mardhiya
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.52000

Abstract

Education in the 4.0 era encourages the use of digital technology in a sustainable learning process. This article tries to analyze student responses to implementing a video project in a basic chemistry course. This research is qualitative research with a survey method. The participants were 74 students of the Chemistry Education Study Program and Mathematics Study Program consisting of 8 male students and 66 female students. Data collection techniques using online questionnaires by google form application. The steps in this study are  Search for instrument literature to be compiled on the google form, compile a google form student response to the implementation of the video project, distribute the google form questionnaire link to students, and analyze the data obtained. The results showed that students positively responded to the implementation of the video project in terms of autonomy, teamwork, and technology used. The implementation of video projects improves learning skills, collaboration, and digital literacy independently, although students experience problems in video editing because they are not used to using these.
ZnO Nanoparticles and Its Interaction With Chitosan : Profile Spectra and Their Activity Against Bacterial Ahmad Fatoni; M. Arif Afrizal; Ade Arinia Rasyad; Nurlisa i Hidayat
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.48000

Abstract

The biosynthesis of ZnO nanoparticles and synthesis of chitosan- ZnO nanoparticles were studied. The aims of this research were biosynthesis of ZnO nanoparticles, synthesis of chitosan-ZnO nanoparticles, its characterization and, used as an antibacterial agent of Escherichia coli. ZnO nanoparticles were biosynthesized by reacting with ethanolic extract of guava seeds leaves (Psidium guajava L.) and zinc acetate dihydrate solution. Chitosan-ZnO nanoparticles were synthesized by the heating method. ZnO nanoparticles and chitosan-ZnO nanoparticles were characterized by FTIR spectroscopy and X-ray diffraction, respectively. The suspension of chitosan-ZnO nanoparticles was used as an antibacterial agent with a paper disk method. The result showed that the Zn-O group at ZnO nanoparticles was detected at a wavenumber 615.29 and 673.16 cm-1  The crystallite size of ZnO nanoparticles was 1.43 nm. The wavenumber of 617-655 cm-1 is the Zn-O group at the structure of the chitosan-ZnO nanoparticle. The average of diameter inhibition zone of chitosan-ZnO nanoparticles (1:2) at concentration 0.25 and 0.5 % (w/v) to Escherichia coli was 15.7 ± 1.0 and 18.3 ± 0.4 mm respectively. 
Developing Animation Video-based Demonstration Experiments in Teaching Solubility and Solubility Product Materials Marlina Marlina; Riyanto Riyanto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.50244

Abstract

Education in the 21st century is learning to prepare a generation that prioritizes advances in information and communication technology (ICT) as a medium for students to develop products in the form of animated videos, demonstrations and experiments. This study aims to produce valid, interesting, and effective learning media. This research is an ADDIE development research with five stages: analysis, design, development, implementation, and evaluation. The subjects in this study were three high school students with 60 students and three teachers and two validators—data collection instruments in questionnaires and tests. The data analysis technique in this research and development is a descriptive statistical analysis technique of percentages to process data from the validator's assessment, student responses and test results. Qualitative descriptive describes data in the form of suggestions and comments from the validator. The animation video media validation results obtained an average score of material expert validation, and media expert validation obtained a percentage of 84%, classified as very good. The results of the student response questionnaire to the learning media obtained a percentage of 86% with an exciting category. Finally, the test results obtained 100% results with effective criteria where all students met the minimum standard of completeness set by the school, namely 76 for chemistry subjects.
The Development of Structured Inquiry with three-Level Representation Module Hidayati - Hidayati
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.53945

Abstract

Mole concepts are essential parts of chemistry learning and have become preliminaries to learn other chemistry concepts. However, the learning resource used has not incorporated three representations, resulting in students' learning outcomes. This study aimed to develop a structured inquiry module in terms of validity and practicality. The method used in this study is research development through the use of the Plomp model. There were 141 senior high school students in Padang participating in the study. The instruments of this study included cognitive tests. The result of the study indicated that the structured inquiry module had high validity (V=0.98), practicality based on teachers' response (P=0.36) and students' response (P=0.36)Furthermore, the result of the t-test toward hypotheses of the learning outcome of the mole concept showed that the learning outcome of the mole concept in experimental groups was higher than that of control groups at both schools. Hence, the structured inquiry module has high validity and practicality. It is also effective to be used in chemistry learning at school. The module developed is a module with three levels of representation (macroscopic level, submicroscopic level and symbolic level). The module contains structured inquiry activities. The module also includes several components such as teacher guidelines, student activity sheets, worksheets, worksheet keys, test sheets, test sheet keys..
Development of Authentic Assessment Based on Creative Thinking Skills in A Carbohydrates Qualitative Analysis Project-Based using Local Material sari, Diah kartika; Sufiana, Jejem Mujamil; Wancik, K. Anom; Haryani, Maefa Eka
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.52860

Abstract

Laboratory activities can improve creative thinking skills. This study aims to develop an authentic assessment based on creative thinking skills. This research is development research with the Rowntree development model. The research stages consist of the planning stage, the development stage and the evaluation stage. Data were analyzed using CVR and test description. This study was conducted with 33 participants. This research has produced an authentic assessment instrument consisting of learning indicators, written tests, test rubrics, product rubrics and psychomotor assessment rubrics. An authentic assessment developed in the qualitative analysis of carbohydrates with a CVR value obtained is +0.70, which can be considered valid for all validated components. The authentic assessment reliability test resulted in an average score of 56.56, a standard deviation of 25.06, and test reliability of 0.82. from the analysis, it was determined that the authentic assessment based on creative thinking skills of qualitative analysis of carbohydrates with local material developed had met the valid and reliable criteria. 
Synthesis of Conjugated Copolymers Fluorene-based on Thieno-thiophene for Photovoltaic Cells Mohd Sani Sarjadi; Yap Leong Khen; Mohd Hafiz Abd Majid; Sabrina Soloi
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.49054

Abstract

Organic solar cells have been receiving more attention in the recent years due to the cost bottleneck cap of inorganic solar cells and the increasing demand for more low-cost renewable power sources. In this work, poly(9,9-didodecylfluorene-alt-thieno[3,2-b]thiophene), P1 composed of alternating fluorene based co-polymer unit was successfully prepared by direct arylation polymerization. P1 composed of alternating fluorene unit as a donor unit and thieno[3,2-b]thiophene as a donor unit which is a donor-donor co-polymer. The colour and phase of P1 were observed. TLC showed positive result for P1. The surface morphology of P1 was identified by SEM. The structure of P1 was confirmed by using 1H-NMR and 13C-NMR. Functional group present of P1 were identified by using FTIR. The λmax and range of adsorption of  P1 were identified and band gap were calculated. The physical characteristics of P1 was compared and discussed. Based on the chemical characteristics, P1 has a high potential as organic photovoltaic material as UV-Vis shown a better adsorption range and lower band gap. 
Identification of The Same and The Major Components in Zingiber amaricans BL., Zingiber aromaticum Val. and Zingiber zerumbet (L.) Smith Rhizomes Essential Oils from Jumapolo Karanganyar Central Java Indonesia Sri Retno Dwi Ariani; Nurul Septiana; Septa Falentina
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.48987

Abstract

The aim of this research was to know about the same and the major essential oils components in bitter ginger (Zingiber amaricans BL.), fragrant ginger (Zingiber aromaticum Val.) and shampoo ginger (Zingiber zerumbet (L.) Smith) rhizomes from Karanganyar Central Java Indonesia. The steps of this research were prepared samples, extracted with steam destillation methode and identificated essential oil components of samples with Gass Chromatography-Mass Spectrophotometry (GC-MS) method. The same components between Z. amaricans BL., Z. aromaticum Val., and Z. zerumbet  (L.) Smith were zerumbone, α-humulene, β-selinene dan (-)-caryophyllene oxide. The mayor constituent in Z. amaricans BL., Z. aromaticum Val., and Z. zerumbet  (L.) Smith oils were zerumbone. Z. zerumbet  (L.) Smith oil presented the highest quantity of zerumbone (77.62%).
Study of Virtual Molecular Docking of Avocados Compounds against Pseudomonas aeruginosa (5N5H) by Carbapenemase using DOCK 6 Algorithm Hanidya Fidela Ulayya; Arifa Nursayyida; Fabiola Irianty Atmaja; Broto Santoso
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 2 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i2.54025

Abstract

Antimicrobial resistance from bacteria is a global health problem that can cause death, and the cause is the emergence of carbapenem resistance Pseudomonas aeruginosa through VIM (Verona integron-encode metallo-β-lactamase), which causes the carbapenem class of antibiotics not to work properly. This species is a gram-negative bacteria which is the main cause of nosocomial pneumonia infection. This study aims to determine in silico inhibitory activity of 50 compounds obtained from avocado (Persea Americana Mill) on VIM, preventing carbapenem antibiotic resistance. The molecular docking process was carried out to test carbapenem's antibiotic resistance control activity by 50 compounds. Docking using DOCK 6 software with a flexible and rigid method, Molecular docking on a protein with PDB ID 5N5H, The target protein was prepared using the Chimera application. Visualization of ligand-protein interactions was carried out with PyMOL and PLIP. The results of the native ligand grid score obtained by each method are -63.013 kcal/mol (Flexible) and -64.032 kcal/mol (Rigid). The best test ligands in the flexible method are 44257090, 14282775 and 44257819, and the grid score are -77.474, -75.274 and -73.219 kcal/mol. The best test ligands in the rigid method are 5280637, 14282775 and 5490064; the grid score is -62.191, -61.714, and -60.453 kcal/mol. The results of the test ligands can provide a better grid score than native ligands, namely in the flexible method. However, the rigid method of grid score results is no better than the native ligand. A good result is that the test ligand grid score is smaller than native ligands, so it has less energy to bind to the active site.
Adsorption of Anionic and Cationic Dyes in Batik Wastewater Using Biomass Adsorbents: Literature Review Shofi Kurniawati; Nurma Yunita Indriyanti
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i3.55409

Abstract

This literature review aims to determine: 1. the content of chemical compounds in biomass waste, 2. the modification methods of biomass waste to be used as an adsorbent, 3. the suitable parameters for adsorbing anionic and cationic dyes. This literature review was conducted by Seven Steps Comprehensive Literature Review and reviewed 41 articles with the filtration processes. First, the search results using certain keywords in the Google Scholar database obtained 449 articles. Selection by year of publication (2016-2020), becomes 295 articles. Selection by duplicate and irrelevant articles, becomes 56 articles. Selection by publication type, becomes 47 articles. Lastly, full-text article screening becomes 41 articles. The results of this literature review show that: 1. Sources of biomass adsorbents include tea waste, peanut shells, cassava dregs, cassava peels, oil palm empty bunches, coffee grounds, corn cobs and coconut shavings. The content of chemical compounds in biomass waste include cellulose, hemicellulose and lignin. The highest content of cellulose was found in peanut shells at 63,5%; hemicellulose was in coffee grounds at 40,55%; and lignin was in wood shavings at 17-35%. The content of cellulose in the adsorbent source affects the adsorption ability of the adsorbent produced. 2. The modification methods of biomass adsorbent include carbonization, physical and chemical activation, and nanocomposites. The adsorption capacity of the adsorbents made by the carbonization-activation, chemical activation, and nanocomposite manufacturing method are 102,77 – 332,6 mg/g; 26,67 – 236,6 mg/g; and 12,42 mg/g, respectively. 3. Parameters that affect the adsorption of anionic and cationic dyes are pH, contact time, adsorbent mass, and initial concentration of the adsorbate solution. The optimum conditions for anionic dyes adsorption by biomass adsorbents occurred at pH 2-4, contact time 30 – 40 minutes, 0,1 – 0,2 g of adsorbent mass, and initial concentration 80 – 100 mg/L. While the optimum conditions for cationic dyes adsorption occurred at pH 5-9, contact time 60 – 90 minutes, 0,2 – 0,3 g of adsorbent mass, and initial concentration 100 – 120 mg/L.
Item Quality Analysis of Chemistry Final Semester Test in The Academic Year of 2017/2018, 2018/2019 and 2019/2020 Nazatin Nuroini; Sulistyo Saputro; Suryadi Budi Utomo
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 6, No 3 (2021): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v6i3.54999

Abstract

Item analysis is a process in which both students' answers and test questions are evaluated in order to determine the quality of the items and the test as a whole in the standardized and objective evaluation of student performances. Evaluation is needed to define how much the participants' learning outcomes have changed from their beginning abilities to their abilities after completing the educational process. This research examines the items' quality from a quantitative standpoint. The aims of this study are to determine the difficulty index, item discrimination, distractor effectiveness, and reliability of the final semester test for Chemistry Subject Class X MIPA SMAN 1 Wonosegoro, Boyolali Regency. The research was carried out at SMAN 1 Wonosegoro, Boyolali Regency, using a quantitative descriptive technique. This study's population consists of response data from all 212 students in class X MIPA Chemistry throughout 2019/2020, 2018/2019 and 2017/2018 academic years. Documentation techniques are used to collect data. The data was analyzed quantitatively with the ANATES 4.0.9 version. According to the findings, in three consecutive academic years, the difficulty index was medium means is good because it is neither too complex nor too simple. Item discrimination is acceptable and meets the standards of sufficient, good, and exceptional. The distractor effectiveness was functions and the reliability value in the Academic Year of 2017/2018 was sufficient at 0.45, but it was high at 0.62 and 0.78 in the Academic Year of 2018/2019 and 2019/2020. The finding of this study item analysis is a crucial process in creating tests. This is about the impact of the accuracy of students' scores on test quality.

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