cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
jkk.hydrogen@gmail.com
Phone
-
Journal Mail Official
jkk.hydrogen@gmail.com
Editorial Address
Jln. Pemuda No. 59A Mataram
Location
Kota mataram,
Nusa tenggara barat
INDONESIA
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
 37   38   39   40   41 
The Impact of Problem-Based Learning (PBL) Module on Critical Thinking Skills on Electrolyte and Nonelectrolyte Solutions Sari, Dwivelia Aftika; Herman, Mimi; Putri, Steva Dara; Hidayati, Hidayati
Hydrogen: Jurnal Kependidikan Kimia Vol 13, No 1 (2025): February 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i1.14137

Abstract

This research aims to determine the impact of using the Problem-Based Learning (PBL) module on students' critical thinking skills on the material of electrolyte and non-electrolyte solutions. This research uses a quasi-experimental method with a Nonequivalent Control Group Design. Sampling was carried out by using cluster purposive sampling. The data collection technique used was a critical thinking skills  test instrument in the form of essay questions. Hypothesis testing was carried out by using the independent sample t-test. The result showed that using PBL module on the material of electrolyte and non-electrolyte solutions has a positive impact on the critical thinking skills of students at SMA N 1 Sijunjung and SMA N 7 Sijunjung. This is proven by the results of the t-test analysis using SPSS that the significance value is 0.000 less than 0.05 with a significance level (α = 0.05) so that H0 is rejected and H1 is accepted. This means that the use of the PBL module has an impact on students' critical thinking skills regarding the material of electrolyte and non-electrolyte solutions. The critical thinking skills of students in the experimental class who learned using the PBL module were higher than those in the control class in both schools.
Environmental Chemistry in Context: A Digital Supplement on Coconut Shell Briquettes Asturi, Nur Anjar; Hairida; Erlina
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16723

Abstract

This study aimed to assess the validity of a local-issue-based coconut shell briquette e-supplement developed for an environmental chemistry course, as well as to evaluate student responses to the material. Utilizing the Research and Development (R&D) method with the ADDIE model and a descriptive quantitative approach, the study measured both expert evaluations and learner perceptions. The e-supplement was reviewed by two content experts, two linguistic experts, and two media experts, and was tested by ten students enrolled in the Chemistry Education program at FKIP UNTAN. Data were collected through a combination of direct and indirect communication techniques, along with measurement instruments including validity assessment sheets and response questionnaires. The findings revealed that the e-supplement achieved a validity score of 81.25% in material quality, 87.50% in linguistic clarity, and 94.44% in media presentation. Additionally, student responses indicated a high level of approval, with a 91.5% positive rating. Based on these results, the e-supplement is considered suitable for implementation in environmental chemistry education, and it shows promising potential to support contextual learning and contribute to Education for Sustainable Development (ESD).
Literature Review: Bioactivity of Alkaloids from Various Plants that Have Potential as Antibacterials Usman; Hutauruk, Kevin Jeremia; Rabiah, Nasya Hikmatul; Rahmadani, Intan Aulia; Miranda, Esti
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16734

Abstract

Alkaloid compounds are active secondary metabolite compounds produced by plants. These alkaloid compounds provide extraordinary health benefits for humans because alkaloid compounds are efficacious as antidiarrheal, anti-microbial, anti-diabetic, anti-microbial, and anti-malarial. The purpose of this literature review is to describe plants that produce alkaloid compounds as secondary metabolites and their bioactivity as antimicrobials. This literature-based study was systematically carried out to gather, evaluate, and synthesize research results concerning the antibacterial properties of alkaloids and other natural secondary metabolites from plants. The analysis focused on publications from 2015 to 2025, sourced through a structured search in the Medline database using PubMed and Google Scholar. The results of this literature review explain that there are many plants that produce alkaloid compounds as their secondary metabolites. Alkaloid compounds in each plant have the same bioactivity both as anti-fungal and anti-fungal. Alkaloids in their bioactivity will interfere with and damage cell formation in microbes so that microbial growth will be inhibited.
Analysis of Multiple Representation Ability of Chemistry Education Students on Hydrocarbon Ichsan, Rizki Furqanul; Enawaty, Eny; Erlina
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16749

Abstract

This study aims to analyze students' multiple representation ability on hydrocarbon which includes macroscopic, submicroscopic, and symbolic representations. The research subjects were Chemistry Education Study Program students of FKIP Tanjungpura University class of 2022 and 2023 who had taken the Organic Chemistry of Monofunctional Compounds course, totaling 108 people. The research used a quantitative descriptive method with an instrument in the form of a description test of 9 questions, each of which represented three levels of representation. The results showed that students' macroscopic representation ability was classified as good with an average of 68.30% (batch 2023) and 64.86% (batch 2022). The submicroscopic representation ability is classified as good, with an average of 70.26% (batch 2023) and 69.59% (batch 2022). Meanwhile, the symbolic ability of the 2023 batch students was classified as sufficient with an average of 53.43%, and the 2022 batch was classified as good with an average of 67.10%. These findings indicate that students still experience difficulties, particularly in mastering symbolic representation, which is a crucial aspect in understanding hydrocarbon chemistry concepts. Therefore, training in symbolic representation mastery is necessary. The novelty of this research lies in the focus of the analysis of students' abilities in integrating the three levels of representation comprehensively on the topic of hydrocarbons, which until now has rarely been studied specifically in the context of chemistry education.
Analysis of the Desorption Capacity of Pb2+ and Cu2+ Metals on Silica and Silica-Chitosan Adsorbents Puspitasari, Faizul; Harimu, La; Mulyana, Wa Ode
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16781

Abstract

Studies have been conducted on the analysis of the desorption ability of Pb(II) and Cu(II) metals from silica and silica-chitosan adsorbents. This study aims to determine the desorption ability of Pb2+ and Cu2+ metals with variations in HCl concentrations using silica adsorbents and to determine the desorption ability of Pb2+ and Cu2+ metals with variations in HCl concentrations using silica-chitosan adsorbents. The parameters optimized in this study were concentration variations, namely 0.005 M, 0.01 M, and 0.02 M. The results of the study showed that silica adsorbents, Pb(II) metal desorption was best obtained at an HCl concentration of 0.02 M, which was 10.11%. Meanwhile, in silica adsorbents for Cu(II) metals, the best desorption was also obtained at an HCl concentration of 0.02 M, which is 0.0753%. In the silica-chitosan adsorbent, the best Pb(II) metal desorption was obtained at an HCl concentration of 0.01 M, which is 0.0298%, while the best desorption of Cu(II) metal was obtained at an HCl concentration of 0.01 M, which was 12.0684%
Development of Digital Interactive Modules for Teaching Chemical Bonding of Grade XI Senior High School Students Sari, Irfani Winda; Enawaty, Eny; Erlina
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16805

Abstract

This study aims to determine the feasibility of an interactive electronic module on chemical bonding for 11th-grade high school students, as well as to describe student responses to its use. The study is a type of Research and Development (R&D) using the 4D development model (Define, Design, Develop, and Disseminate), though it is limited to the Develop stage. Data collection instruments included feasibility assessment sheets and student response questionnaires. The module’s feasibility was assessed by three experts based on language, content, and media aspects. The results showed an average feasibility percentage of 95.51%, categorized as highly feasible. The response test was conducted on a limited basis with 30 students from grade XI at SMA N 1 Sungai Raya, yielding an average response percentage of 87.25%, categorized as very good. Based on these results, the interactive electronic module was deemed feasible and received positive responses from students, making it a potential alternative for engaging and interactive learning in chemical bonding.
The Impact of Metacognitive Awareness on Retention of Solubility and Solubility Product Equilibrium Concepts Marisa; Erlina; Ulfah, Maria
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16810

Abstract

This study aims to describe the level of metacognitive awareness and learning retention regarding the concepts of solubility and solubility product among grade XI students at Senior High School 10 Pontianak, as well as to analyze the correlation between the two variables. The study population consisted of 94 students from classes XI A, XI B, and XI C, with a sample of 57 students selected through simple random sampling from classes XI B and XI C. Data were collected using a Metacognitive Awareness Inventory (MAI) questionnaire to measure metacognitive awareness and an essay test to assess learning retention. Descriptive and inferential statistical techniques were used for data analysis. The results showed that 35% of students demonstrated metacognitive awareness in the "developed" level, while 65% were in the "very well-developed" level. The average learning retention rate for solubility and solubility product concepts was 90.50%, categorized as high. A weak positive and significant correlation (r = 0.280) was found between metacognitive awareness and learning retention, with metacognitive awareness accounting for 7.8% of the variance in learning retention. These findings suggest that while metacognitive awareness influences learning retention to some extent, other factors also play a significant role. This study offers a contribution by specifically exploring the relationship between metacognitive awareness and learning retention on chemistry concepts such as solubility and Ksp concepts at the Senior High School level, a study and subject matter that is rarely explored specifically and simultaneously.
Validity of the Corporate Edition Flip PDF Assisted Learning E-Module for Improving Students' Critical Thinking Skills Imara, Salsabila Yulia; Rusmini
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16830

Abstract

The rapid development of 21st-century technology demands that students possess critical thinking skills as one of their core competencies. To support the achievement of this competency, innovative, interactive, and relevant learning media are needed. This research is a Research and Development (R&D) study that aims to develop and test the content and construct validity of a Problem-Based Learning (PBL)-based e-module on Thermochemistry material, assisted by Flip PDF Corporate Edition. The development model used is 4D (Define, Design, Develop, Disseminate), but this research is limited to the develop stage. The main focus of the research lies in the validity aspects of the e-module, both in terms of content and construct, covering aspects of content suitability, language, presentation, and graphics. The instrument used was a validation sheet, assessed by three expert validators in chemistry education and instructional material development. The validation results indicate that the e-module is in the valid category, with a modal score of 4, which falls into the good category. This validation process was conducted to ensure that the developed e-module meets the feasibility standards as an interactive learning medium capable of fostering students' critical thinking skills. The findings from this validation stage will then serve as the basis for refining the e-module before it is piloted on a limited number of students.
Synthesis and Characterization of Porous Polymer as a Support Matrix for Lipase Immobilization Erwanto, Erwanto; Saputra, Arya Ananda; Abimanyu, Muhammad Rakha
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16864

Abstract

Immobilization of lipase on solid supports has become a promising approach to improve enzyme stability, activity, and reusability in various industrial processes. This study focuses on the development of a porous polymer, poly(glycidyl methacrylate-co-trimethylolpropane trimethacrylate) [Poly(GM-co-TT)], as a functional support for covalent lipase immobilization. The experimental procedure included three main stages. First, Poly(GM-co-TT) was synthesized via free radical polymerization using a ternary porogenic solvent system consisting of 1,4-butanediol, 1-propanol, and water in a 4:7:1 (v/v) ratio to obtain a porous structure. Second, lipase was immobilized covalently through the reaction between epoxy groups of the polymer and amino groups of the enzyme, using a 0.2 M KCl–NaOH buffer (pH 11) at a final enzyme concentration of 10 mg/mL, incubated at room temperature for 120 minutes. Third, characterization was performed using FTIR spectroscopy and scanning electron microscopy (SEM) to verify successful immobilization. FTIR analysis revealed the presence of ester (C=O), ether (C–O–C), and epoxide (C–O) groups in the polymer. Post-immobilization spectra showed reduced epoxy band intensity (~910 and 840 cm⁻¹) and the appearance of amide bands (~1640–1660 cm⁻¹), indicating covalent bonding between polymer and enzyme. SEM images confirmed a porous, globular, interconnected morphology with well-distributed pores, ideal for enzyme anchoring. The open and rough surface increases surface area, enhancing immobilization efficiency. The novelty of this study lies in employing Poly(GM-co-TT) as a porous polymer that preserves epoxy functionality while effectively supporting covalent lipase immobilization.
Development of a Tutorial Video for Creating Digital Based Card Game Media Faridy, Fadhil Alwa; Enawaty, Eny; Muharini, Rini
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 4 (2025): August 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i4.16889

Abstract

The primary objective of this study is to measure the level of validation and identify educators responses to a tutorial video on the creation of digital based card game media. This study employs a Research and Development (R&D) method, using the ADDIE model as its development framework. Data were collected through interviews, literature review, and response questionnaires. The subject of this study is a tutorial video on developing digital based card game media, which was tested with 12 chemistry teachers from six districts in Pontianak City. The selection of respondents in this study was based on the willingness of educators to participate as respondents and to provide the necessary data. The developed media were validated in terms of media and language aspects by two media experts and two languange experts, respectively. The validation results indicated that the media and language aspects achieved validity percentages of 93% and 97%, respectively. The average response percentage from chemistry educators toward the developed product was 96%. Therefore, the tutorial video for creating digital based card game media is categorized as highly valid and received very positive responses, indicating its potential for use by educators in designing digital base. The novelty of this research lies in the development of a tutorial video designed specifically to assist educators in creating digital-based card game learning media.

Page 39 of 62 | Total Record : 618

 37   38   39   40   41 

Filter by Year

2013 2025


Reset
Filter By Issues
All Issue Vol. 13 No. 5 (2025): October 2025 Vol. 13 No. 4 (2025): August 2025 Vol. 13 No. 3 (2025): June 2025 Vol. 13 No. 2 (2025): April 2025 Vol. 13 No. 1 (2025): February 2025 Vol 13, No 1 (2025): February 2025 Vol. 12 No. 6 (2024): December 2024 Vol 12, No 6 (2024): December 2024 Vol 12, No 5 (2024): October 2024 Vol. 12 No. 5 (2024): October 2024 Vol 12, No 4 (2024): August 2024 Vol. 12 No. 4 (2024): August 2024 Vol 12, No 3 (2024): June-July 2024 Vol. 12 No. 3 (2024): June-July 2024 Vol. 12 No. 2 (2024): April-May 2024 Vol 12, No 2 (2024): April-May 2024 Vol 12, No 1 (2024): February 2024 Vol. 12 No. 1 (2024): February 2024 Vol 11, No 6 (2023): December 2023 Vol. 11 No. 6 (2023): December 2023 Vol 11, No 5 (2023): October 2023 Vol 11, No 4 (2023): August 2023 Vol 11, No 3 (2023): June 2023 Vol 11, No 2 (2023): April 2023 Vol 11, No 1 (2023): February 2023 Vol 10, No 2 (2022): Hydrogen: Jurnal Kependidikan Kimia Vol 10, No 1 (2022): Hydrogen: Jurnal Kependidikan Kimia Vol 9, No 2 (2021): Hydrogen: Jurnal Kependidikan Kimia Vol 9, No 1 (2021): Hydrogen: Jurnal Kependidikan Kimia Vol 8, No 2 (2020): Hydrogen: Jurnal Kependidikan Kimia Vol 8, No 1 (2020): Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 2 (2019): Hydrogen: Jurnal Kependidikan Kimia Vol 7, No 1 (2019): Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 2 (2018): Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 1 (2018): Hydrogen: Jurnal Kependidikan Kimia Vol 5, No 2 (2017): Hydrogen: Jurnal Kependidikan Kimia Vol 5, No 1 (2017): Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 1 (2016): Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 2 (2015): Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 1 (2015): Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 1 (2014): Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 2 (2013): Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 1 (2013): Hydrogen: Jurnal Kependidikan Kimia More Issue