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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
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The Effectiveness of the Case Method in Promoting Meaningful Learning and Enhancing Student Learning Outcomes Munawwarah, Munawwarah; Ruslan, Zuhrah Adminira
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.v13i1.14567

Abstract

This study investigates the effectiveness of the case method in fostering meaningful learning and improving student learning outcomes. Using a quasi-experimental one-group pretest-posttest design, 20 chemistry education students participated in a series of learning activities centered around the case method. Data were collected through pretest and posttest essay assessments and analyzed using descriptive statistics and paired t-tests. Results showed a significant increase in the average student scores from 72.68 (pretest) to 85.21 (posttest), with a reduction in score variability, as evidenced by a t-statistic of -4.28 and a p-value of 0.00045. These findings indicate that the case method effectively enhances student understanding and promotes meaningful learning by engaging students in contextual problem-solving activities. This method aligns with constructivist learning theory and supports the development of essential skills such as critical thinking, collaboration, and the application of theoretical knowledge in practical contexts. Furthermore, its universal applicability across various disciplines highlights its potential to enhance educational practices. Future research should explore long-term impacts, optimize case selection, and examine integration with educational technologies.
Characterization of Activated Carbon from Mangosteen Peel (Garcinia Mangostana L.) Activated with Phosphoric Acid (H3PO4) Indrastika, Erwin Riski; Hidayati, Nasrul Rofiah; Trisnawati, Ade
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.v13i1.14557

Abstract

Mangosteen peel (Garcinia Mangostana L.) represents a waste that has yet to find widespread application. One effort to increase the economic value of mangosteen rind is by processing mangosteen rind into active carbon, which can be used in various industrial processes. This research will examine the manufacture of activated carbon using mangosteen peel as raw material, which is washed clean, cut, and dried, then carbonized using a furnace at a temperature of 250 0C for 1 hour. Activating activated carbon from mangosteen peel is carried out by immersion in a 5 M concentration of phosphoric acid (H₃PO₄). Next, the characteristics of activated carbon from mangosteen peel are examined, including water content, ash content, volatile matter content, and pure carbon content. The study shows that activated carbon meets the SNI-06-3730-1995 standards for its water content (2.76%), ash content (7.24%), volatile matter content (6.02%), and pure carbon content (83.98%).
Description of The Implementation of Character Values In The Project For Strengthening The Pancasila Student Profile (P5) Sustainable Lifestyle Theme Safitri, Dian Eka; Hairida, Hairida; Mayasari, Eni
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.v13i1.14699

Abstract

This research aims to describe the implementation of character values in the Project for Strengthening the Profile of Pancasila Students (P5) at SMA Negeri 8 Pontianak. The method applied in this research is descriptive qualitative. Data was collected through observation, interviews and documentation studies. The focus of this research is on class X students at SMA Negeri 8 Pontianak. P5 is one of the innovations in the Merdeka Curriculum which aims to instill Pancasila values and develop student character through project-based learning. The research results show that character values such as independence, cooperation, responsibility and creativity have been successfully implemented in P5 activities. Through this activity, students are given the opportunity to make their own decisions, which encourages the development of their independence. Additionally, students learn to collaborate in groups, which strengthens students' social and collaborative skills. Students also develop a sense of responsibility by ensuring that individual and group assignments are completed well and on time. Additionally, P5 activities provide students with space to think creatively and find innovative solutions to the challenges they face, which enriches their critical thinking and problem-solving skills. The strategies implemented by teachers in P5 activities include presenting systematic project modules, strengthening a supportive school culture, and increasing the capacity of educators. This research shows that P5 is very supportive in shaping student character in accordance with the Pancasila Student Profile, as well as providing insight for other schools in implementing similar programs to strengthen character education.
HydroTechPure Prototype Development: Dual Mode Filter-Based Water Purification Tool as a STEM-Based Learning Tool Nahadi, Nahadi; Siswaningsih, Wiwi; Nais, Miarti Khikmatun; Rahmawati, Triannisa; Nurhadi, Atep Rian; Widiarti, Hayuni Retno; Sidiq, Ari Syahidul; Evriliani, Agnes Suci; Zahra, Aztiannisa; Sari, Liana Ambar; Razani, Ahmad Nafran; Zahran, Qurrotu Aini; Rahman, Muhammad Fiqri; Abdurrahman, Fajar
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.v13i1.14082

Abstract

Water is one of the most fundamental basic needs for human life. However, disparities in the availability of clean water remain a significant challenge in Indonesia. This study aims to develop a water purification device to address this issue. The research method employed was the ADDIE model, which consists of five stages, with this study focusing on analysis, design, and development, which serve as scope of this study. The result of a water purification, named HydroTechPure, utilizes a dual filter system with high quality absorbent materials and is constructed from acrylic materials, enhanced by 3D design technology and Arduino integration. The development of this device aligns with the sixth goal of the Sustainable Development Goals (SDGs), which emphasizes ensuring access to clean water and sanitation for all. HydroTechPure was developed at FabLab Edu UPI. Beyond its primary function, HydroTechPure is envisioned as a tool for integrating STEM based learning, aiming to foster students’ motivation and environmental awareness.
The Effect of Problem Based Learning Model in Improving Students Argumentation Skills: Systematic Literature Review Okmarisa, Happy; Lestari, Niken Ayu; Ariani, Listia
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.v13i1.14220

Abstract

The purpose of this study is to determine the application of the Problem Based Learning (PBL) learning model affects the ability in learning chemistry in high school. The research was conducted through a literature review from various reliable sources published in 2020-2024. Compared to the traditional learning model, the application of PBL improves students' argumentation skills consistently. This improvement can be seen from the increase in post-test mean scores, N-Gain scores, and mastery of argumentation metrics such as claims, justifications, and refutations. In addition, the PBL model showed better results when used together with learning media, STEM approaches, or group discussions. Therefore, PBL helps students in problem-solving, critical thinking, and scientific communication skills in chemistry learning.
A Literature Review: Antimicrobial Phenolic Compounds in Nutmeg (Myristica fragrans Houtt) Ipaenin, Jahiria; Chabib, Lutfi; Hasnaeni, Hasnaeni; Tunny, Risman
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.v13i1.14583

Abstract

In various countries, testing of phenolic compounds in plants is always carried out because these compounds have various health benefits such as antioxidant, anti-inflammatory, and antimicrobial activities. The types of medicinal plants in Indonesia are known to be very diverse where those included in the medicinal plant group reach more than 1000 species, one of which is nutmeg (Myristica fragrans Houtt.) Nutmeg (Myristica fragrans Houtt.) itself is native to the Maluku Islands, Indonesia. However, besides the Moluccas, nutmeg is also cultivated in several other tropical countries. The main objective of this literature review is to critically examine the antimicrobial properties and identify the specific antimicrobial components of phenolic compounds contained in nutmeg (Myristica fragrans Houtt.) The methodology used in this study involved a comprehensive literature review by utilizing reputable academic databases such as Google Scholar, PubMed, and Science Direct related to articles published between 2019 and 2024. The results of this study were obtained through a thorough search process, resulting in eight articles that were considered to meet the established inclusion criteria. A number of articles showed the effectiveness of nutmeg as an antimicrobial because nutmeg contains phenolic compounds that have antibacterial and antifungal properties, which make it effective as an antimicrobial agent. Therefore, with a more comprehensive understanding of the content of phenolic compounds and their mechanism of action, nutmeg can be a further basis for study in the health sector and the pharmaceutical industry.
Adsorption of Nitrite (NO2-) Using Natural Zeolite and Natural Zeolite Modified with Cetyl Trimethylammonium Bromide (CTAB) Hanan, Ihsan Sofyan; Hakim, Muhammad Fahmi Hakim; Pambudi, Teguh
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.v13i1.14643

Abstract

Nitrite contamination in water is a critical environmental and public health concern due to its toxicity and persistence. This study investigates the adsorption of nitrite using activated natural zeolite and CTAB-modified zeolite through batch experiments. Natural zeolite was activated with 1M HCl to enhance its surface area, while modification with cetyl trimethylammonium bromide (CTAB) was performed to improve anion adsorption capacity. Adsorption experiments were conducted at different pH levels (2, 4, 6, 8) and contact times (10–90 minutes) using a 100 ppm nitrite solution, with 0.2 g of adsorbent in 50 mL solution. Residual nitrite concentrations were analyzed using UV-Vis spectrophotometry. The results showed that the optimum pH for activated zeolite was 4, with a residual nitrite concentration of 0.108 mg/L, whereas CTAB-modified zeolite performed best at pH 2, reducing nitrite to 0.005 mg/L. The optimal adsorption times were 60 minutes for activated zeolite (0.0106 mg/g) and 75 minutes for CTAB-modified zeolite (0.0156 mg/g). Kinetic analysis indicated that activated zeolite followed a pseudo-first-order model (R² = 0.950), while CTAB-modified zeolite was influenced by intraparticle diffusion (R² = 0.764). These findings highlight the potential of zeolites as efficient and cost-effective adsorbents for nitrite removal in wastewater treatment.
The Effect of STEM-Project-based Learning on Self-Efficacy in High School Chemistry Learning Atifah, Alya; Sari, Rr. Lis Permana
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.v13i1.14211

Abstract

This research aims to determine the effect of STEM integrated project-based learning model on students' self-efficacy in learning chemistry. This research method uses a quasi-experiment with a pretest-posttest design consisting of one experimental class and one control class. The experimental class applied the STEM integrated project-based learning model and the control class applied the cooperative learning model. The instrument used is a self-efficacy scale which includes 5 aspects, namely, motivation, task orientation, confidence, perseverance, and problem solving. The data obtained were analyzed using descriptive statistics and inferential statistics. Inferential statistics in the form of independent t-test and paired sample t-test. Based on the analysis conducted, there is a significant difference in the self-efficacy of students between the experimental class and the control class and there is a difference in self-efficacy before and after the STEM integrated PjBL learning model is applied.  The increase in the N-Gain score obtained from the experimental class was higher than the control class seen from the increase in all aspects of self-efficacy. The implications of this research are expected to be able to be a new view and reference for teachers in applying the STEM-integrated PjBL model to increase students' self-efficacy in learning chemistry.
Development of Assessment Tools for Understanding Submicroscopic Representations in Acid-Base Material Ardhana, Ivan Ashif; Hidayah, Rahayu Nur; ‘Aisy, Syandifa Rohadlotul; Ijtihadah, Mustabsyirotul
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.v13i1.14328

Abstract

Acid-base material should ideally be evaluated holistically through the triplet of macroscopic, submicroscopic, and symbolic representations. However, the assessments conducted so far have primarily not evaluated the ability to understand submicroscopic representations and still focus on macroscopic and symbolic representations. Therefore, this research aims to develop an instrument for assessing submicroscopic understanding of acid-base material and analyze its feasibility. The research method used is the 4D model development, carried out up to the develop stage. The results of the content validation by expert validators yielded an average score of 91.2%, which falls into the very valid category. The empirical test results on 116 chemistry teachers and prospective chemistry teachers showed that all items on the instrument were valid with a reliability of 0.60, which falls into the reliable category. Moreover, the instrument has varying levels of difficulty index and discrimination power. The test items' character in the instrument assesses understanding of submicroscopic representations of acid-base concepts such as solution properties, acid strength, acid constant, pH, and degree of dissociation. The recommendation for further research is the need to develop and apply submicroscopic understanding questions in other chemistry topics as a reinforcement in the assessment and evaluation process of chemistry learning.
Analysis of Student Misconceptions Using the Three-tier Diagnostic Test on Atomic Structure Class X Material at SMA N 1 Lintau Buo Tustari, Rahma; Herman, Mimi; Sari, Dwivelia Aftika; Mawarnis, Elvy Rahmi; Herman, Hidayat
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.v13i1.14633

Abstract

This research is motivated by the number of students who experience misconceptions so that they are not successful in chemistry subjects. This study aims to determine the misconceptions that occur in class X students at SMA N 1 Lintau Buo using a three-tier diagnostic test on atomic structure material. In this study using a qualitative approach (descriptive) method. The subjects of this study were class X students with a total of 108 people. The instruments used are the main instrument (the researcher himself) and supporting instruments, namely the three-tier diagnostic test, interviews, observation and documentation. Data validity testing was carried out by increasing persistence and data triangulation. Furthermore, the data analysis technique uses the classification of student answers from the three-tier diagnostic test, then a percentage is obtained based on the atomic structure sub-matter which is grouped into categories of conceptual understanding, misconceptions and not conceptual understanding. Based on the research that has been done, it can be concluded that the results of the analysis of student misconceptions using the three-tier diagnostic test on class X atomic structure material at SMA N 1 Lintau Buo “are that there are two sub-matter of atomic structure with misconceptions with high criteria, namely in the sub-matter of atomic notation based on the number of protons, neutrons and electrons by 69% and sub-matter of isotopes, isobars and isotones by 62%. For the overall atomic structure sub-matter, the average in the concept understanding category is 36% medium criteria, the misconception category is 55.6% medium criteria and the category does not understand the concept of 8.4% low criteria.

Page 37 of 62 | Total Record : 618

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