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
 20   21   22   23   24 
The Effect of Concentration of Titanium Dioxide Nanoparticles on Their Antibacterial Activity in the Synthesis of Polyurethane Biopolymers Andi Budirohmi; Yanti Mustari; Yunita Suriani; Vivi Adriana; Hasnah Natsir
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 5 (2023): October 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i5.9021

Abstract

In the health sector, the use of polyurethane (PU) as a basic material for medical devices still causes problems related to local and systemic infections. One of the most appropriate ways to overcome this problem is to synthesize PU biopolymer with titanium dioxide (TiO2) nanoparticles. The use of nano-shaped materials in this synthesis has many advantages, including being easier to synthesize and being antibacterial. Meanwhile, starch is the result of isolation from banana weevils, where banana weevils are agricultural waste that has not been utilized properly. Particle size and the use of agricultural waste are a form of modification and innovation in PU synthesis, as well as a novelty in the development of this research. In PU synthesis, several characterization techniques are carried out, including polymer tests, namely strain and stress, functional group analysis using (Fourier Transform Infra-Red), and antibacterial tests. Based on the results of the FTIR test analysis, it show that at a wave number of 1724.36 cm-1, the N-H functional group is visible, and the absorption of urethane and TiO2 groups is in the range of 513.07 cm-1. The mechanical properties test shows the strain (28.92 - 21.88% GL) and young's modulus in the interval (5.484-3.268 MPa). The antibacterial test showed that the inhibitory power of test samples A1 and A4 with diameters of 8 mm and 8 mm proved to be very effective in killing E. Coli bacteria, while test samples A1¹, A2¹, A3¹, and A4 were not able to kill E. Coli bacteria. S. Aureus. bacteria. The characterization results show that PU biopolymer can be used as a basic material for making bacterial decontaminant medical devices.
Ethno-chemistry: Relevance Analysis of Electron Valence Subject Material to Sasak Local Wisdom as a Chemistry Learning Resource Kholid Khairul Umam; Dwi Wahyudiati
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 5 (2023): October 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i5.9069

Abstract

The lack of learning resources in the form of teaching materials is one of the problems found in the chemistry learning process, both within the scope of high schools and universities so that the development of contextual teaching materials is very important to do as an implementation of the ethno-chemistry approach in education. The purpose of this research is to explore and reveal the wisdom or local wisdom of the Sasak community, which is developed into teaching materials. This research approach uses a qualitative approach with data collection techniques using interviews, literature studies and documentation methods. A qualitative research approach with interview techniques, literature studies, and documentation methods was used to collect information in the form of individual views, theoretical understandings, and historical data related to the research topic, with the aim of gaining in-depth insights, contextual understanding, and theoretical support needed in the analysis and explanation of the phenomenon under study. The data obtained Analyze by Miles and Huberman qualitative analysis. Research subjects include community leaders, chemical content experts, and reading books relevant to the research. Based on the research findings. It is concluded that Sasak Begibung Culture can be used as a source of learning chemistry through integrating Sasak Begibung culture with valence electron material. Thus, the implementation of this research can be used as a reference in the development of contextualized chemistry teaching materials so that lessons become more meaningful and effective.
Description of Problem Solving Ability of Class X Students of Al-Azhar 10 Pontianak Islamic High School on Chemical Bonding Subject Material Tri Indri Yani; Eny Enawati; Tulus Junanto; Rini Muharini; Rahmat Rasmawan
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 5 (2023): October 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i5.9102

Abstract

This research was conducted to determine the problem solving ability of class X students of Al-Azhar 10 Pontianak Islamic High School on chemical bonding material. The type of research is descriptive qualitative problem solving ability. The research subjects were X IPA 1 class students of Al - Azhar 10 Pontianak Islamic High School totaling 21 people. Data collection tools include test questions designed based on problem-solving and interview guidelines developed based on problem-solving—data collection techniques using measurement techniques and direct communication techniques, namely written tests and unstructured interviews.The results of the problem solving ability data analysis were calculated using a problem solving ability assessment instrument and were presented as a whole based on the problem solving criteria instrument. The results of the analysis obtained students' problem solving ability on chemical bonding material, namely indicators of understanding the problem 49% (sufficient), making a plan 56% (sufficient), implementing a plan 63% (good), and checking back 70% (good) with an average percentage of 60% (sufficient). So it can be concluded that students' problem solving skills on chemical bonding material have an adequate predicate.
Penerapan Model Pembelajaran Team Based Learning untuk Meningkatkan Keterampilan Abad 21 bagi Mahasiswa Calon Guru Kimia Tulus Junanto; Rody Putra Sartika
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 6 (2023): December 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i6.9832

Abstract

Pendidikan abad 21 memerlukan keterampilan dunia nyata yaitu komunikasi, kolaborasi dan berfikir kritis. Model pembelajaran Team Based Learning (TBL) memberikan banyak kesempatan kepada mahasiswa untuk mengembangkan kemampuan bekerjasama. Tujuan yang ingin dicapai dalam penelitian ini adalah a) mendeskripsikan penggunaan model pembelajaran TBL untuk meningkatkan keterampilan abad 21 bagi mahasiswa calon guru kimia, b) mendiskripsikan prosedur pelaksanaan kegiatan model pembelajaran TBL untuk meningkatkan keterampilan abad 21 bagi mahasiswa calon guru kimia. Metode penelitian ini adalah jenis penelitian kualitatif dengan pendekatan deskriptif. Hasil penelitian adalah a) implementasi model pembelajaran TBL dapat meningkatkan keterampilan abad 21 bagi mahasiswa calon guru kimia dengan cara berkolaborasi, aktif berkomunikasi, berpikir kritis dan kreatif selama proses pembelajaran, b) prosedur pelaksanaan kegiatan model pembelajaran TBL untuk meningkatkan keterampilan abad 21 bagi mahasiswa calon guru kimia yaitu pra-kelas, Readiness Assurance Process (RAP), Application of Course Concepts , instructor feedback.
Exploring Integrated Instrument Complement at Practical Approach at MAN 4 Tanah Datar Mutia, Ulfa; Mawarnis, Elvy Rahmi
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.10992

Abstract

The purpose of this research is to produce Integrated Instrument Components. Exploring integrated instrument complement at practical approach at MAN 4 Tanah Datar which is valid and practical. This study uses the Research and Development research method with the 4-D development model (define, design, develop, and disseminate). But the stages in research with this 4-D model are only carried out from the first to the third stage, namely the define stage to get conditions in the field. design stage to prepare a simple practicum kit on Thermochemistry material, and the develop stage to get the results of the initial practicum IIC that has been designed followed by validity and practicality tests. The research instruments used were validation sheets and response questionnaire sheets. The validation sheet was filled in by 2 lecturers and 1 chemistry educator. The response questionnaire sheet was filled by 17 of in 11th grade students of MAN 4 Tanah Datar. The results showed that: 1) Simple Practical IIC on Thermochemical Material has met the valid criteria with 92% validation results, 2) Simple Practical IIC on Thermochemical Material has met the practical criteria with the results of the student response questionnaire.
The Relationship between Drinking Water Consumption, Nutritional Status and Workload with The Incidence of Heat Strain in Tofu-Making Workers in West Kekalik Sub-District Ayu, Baiq Fathin; Kardi, Kardi; Wanda, Janur
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i3.12373

Abstract

Various cases of accidents and occupational diseases, as well as other health problems are often caused by unqualified work environment factors, Workers in a hot environment are one of the causes of workers experiencing occupational diseases. Heat strain is an acute or chronic impact caused by exposure to heat stress experienced by a person from physical and mental aspects. The physical impact caused by heat strain ranges from mild complaints such as skin rashes to fainting to life-threatening situations when there is a cessation of sweating and heat stroke. Tofu making is one of the hot working environments. This study uses a quantitative method with a sampling technique using a purposive sampling technique. The sample in this study is 44 tofu makers. The data collection technique uses questionnaires and pulse measurement. Data analysis uses the Spearman Rank test. The results showed that there was a relationship between drinking water consumption and heat strain activity with a value (p = 0.000), there was no relationship between BMI (p = 0.113) and there was a relationship between workload and heat strain incidence (p = 0.000) and heat strain complaints in tofu factory workers. It is expected that workers consume >11 glasses of drinking water and use clothes that can reflect heat such as wearing thin clothes, wearing loose shirts and easily absorbing sweat.
The Influence of Adding Glycerol and Spirulina on The Characteristics of Starch-Based Bioplastics Film from Potato Peel Waste Kamilah Pathun Ni'mah; Muhammad Fahmi Hakim; Leggy Doriyanti Julia Putri; Fira Rahmawati
Hydrogen: Jurnal Kependidikan Kimia Vol 11, No 6 (2023): December 2023
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v11i6.9549

Abstract

The development of bioplastic films is one of the efforts to reduce plastic waste. The polymer used as the basic material for making bioplastic films is starch. Potato peel waste can be repurposed by extracting its starch content. This research has the purpose to investigate the influence of adding glycerol and spirulina on the characteristics of bioplastic films made from potato peel starch, and to ascertain the optimum composition of raw materials. Bioplastics were produced by casting method from potato peel starch with variations of glycerol and spirulina. The bioplastic composition in this research includes K0 (0 ml glycerol and 0 grams spirulina), K1 (2.5 ml glycerol and 0.3 grams spirulina), K2 (1.25 ml glycerol and 0.3 grams spirulina), K3 (2.5 ml glycerol and 0.15 grams spirulina), and K4 (1.25 ml glycerol and 0.15 grams spirulina). The characteristics of bioplastic films include thickness testing, tensile strength, elongation at break, and degradation. The results from the characterization of bioplastic films indicate that the addition of glycerol and spirulina is inversely proportional to the tensile strength produced, meaning it decreases. However, the addition of glycerol and spirulina is directly proportional to the percentage of elongation produced, meaning it increases. The addition of spirulina has an impact on the degradation time of bioplastic films. The optimal raw material ratio in this research is found in sample K4, with a tensile strength value of 23.038 MPa, elongation at break of 4.385%, thickness of 0.1367 mm, and complete degradation occurring on the sixth day.
Description of the Ability to Arrange Assessments According Curriculum 2013 on Chemistry PPG SM3T Student Rahayu, Sri; Hairida, Hairida; Rasmawan, Rahmat; Sartika, Rody Putra; Hadi, Lukman
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10442

Abstract

The curriculum 2013 experienced a shift in the assessment process, which is from the assessment of results to the assessment process. In the process of carrying out the assessment, many complaints that arise in the field including the difficulty in determining the assessment of various aspects both cognitive, affective, and psychomotor. Researchers are interested in knowing how the ability of PPG SM3T Chemistry Education’s Students as a prospective professional teacher in compiling an assessment based on curriculum 2013. The research purposes were to describe the ability of PPG SM3T Chemistry Education’s Students in compiling an assessment based on curriculum 2013. The methode of the research was descriptive with study case involved 16 students of PPG SM3T Chemistry Education in the 2018/2019 school year. The research instrument was in the form of an assessment rubric with 10 aspects of assessment, one of which contained HOTS questions. The results of the data analysis showed that the ability of PPG SM3T Chemistry Education in compiling HOTS questions was classified as less skilled with an average score 67.19% whereas when viewed from all aspects of the preparation of the assessment based on curriculum 2013 it was classified as skilled with an average score 84.89%.
Exploration of Student Thinking Systems Through STEM-PjBL Project Based Learning in the Science Field Sukarma, I Ketut; Hulyadi, Hulyadi; Muhali, Muhali; Azmi, Irham
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 3 (2024): June-July 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i3.12273

Abstract

The complexity of science concepts which are interrelated with each other requires the competence to think systematically. Complex thinking which is the basis for critical, analytical, creative and metacognitive thinking is very important to master in responding to the challenges of the 21st century. The aim of this research is to explore students' thinking systems taught using the STEM-PjBL model. This research is quantitative descriptive research. The variables studied are students' thinking systems based on the ability to determine components that influence each other in the bioethanol synthesis and dehydrator processes. The population in the study was 17 students. Students are distributed in two semesters, namely semesters II and IV. The research uses pre-test and post-test systematic thinking ability tests as data collection techniques and tools. The test consists of 5 essay questions that assess students' systematic thinking competence, and the test used is analyzed for validity, discrimination power, and level of difficulty before use. This test was developed based on indicators of systematic thinking competency. Tests were given to students before and after carrying out project activities for making and dehydrating bioethanol. After carrying out the project, students strengthen their competence through computational simulations related to the project being carried out. The data obtained is then presented in a communicative graph. The research results showed that 35.2% had high system thinking, 29% medium, 35.6% low. These results show that the application of the STEM-PjBL model is able to foster students' systematic thinking competency.
Identification of Medicinal Chemicals (BKO) Piroxicam in Jamu Pegal Linu Preparations in Makassar City Hasnaeni, Hasnaeni; Handayani, Selpida; Andina, Velda
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 1 (2024): February 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i1.10576

Abstract

The aim of the research was to identify Piroxicam in herbal medicine for rheumatic pain circulating in Makassar. There are several traditional medicines that contain medicinal chemicals. Research has been conducted on the identification of medicinal chemicals (BKO) on several rheumatic herbs preparations in herbs shops in Makassar. The BKO which is often included in rheumatic herbs is the NSAID group, one of which is piroxicam. This inspection was conducted to know the presence of the chemical drug piroxicam contained within rheumatic herbs preparations and the samples used were 5 samples. The method used was a qualitative test using thin layer chromatography (TLC) consisting of a mobile phase mixed with n-hexane and acetone (7:3) and a stationary phase using Silica Gel GF254. The results of the TLC examination from 5 samples of herbal medicine added BKO piroxicam contained 3 samples including herbs A, B, and C because they had the same stain color at the same Rf value as the piroxicam. Some of the rheumatic herbs circulating in Makassar contain medicinal chemicals in the form of piroxicam.

Page 22 of 62 | Total Record : 618

 20   21   22   23   24 

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