Hydrogen: Jurnal Kependidikan Kimia
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.
Articles
20 Documents
Search results for
, issue
"Vol. 12 No. 4 (2024): August 2024"
:
20 Documents
clear
<![CDATA[Development of Reaction Rate Animation Application (Alare) to Train Students' Critical Thinking Skills on Reaction Rate Material ]]>
<![CDATA[Sudiyono, Achmad Farichi]]>;
<![CDATA[Sukarmin, Sukarmin]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12386
<![CDATA[The purpose of this research is to produce an Alare application that is feasible to use to train students' critical thinking skills in the sub-material of factors that affect the reaction rate. The feasibility of the Alare application is reviewed from three aspects, namely validity, practicality, and effectiveness. This research used the Research and Development (R&D) method with the Sukmadinata development model. The limited trial was conducted in class XI IPAS of Senior High School 20 Surabaya with 16 students. The research data shows that (1) Alare application is declared valid as indicated by the mode of content validity and construct validity of 4 with the valid category, (2) Alare application is declared practical as indicated by the average results of student response questionnaires, which are supported by student activity observations, amounting to 89.2% with very practical criteria, (3) Alare application is declared effective based on the increase in the acquisition of pretest and posttest scores of critical thinking skills and also the completeness of students' learning outcomes. The value of students' critical thinking skills based on the N-gain score increased because the medium-g and high-g criteria were obtained. The completeness of students' learning outcomes in both individual and classical completeness is significantly complete with a percentage of 100%. Based on this, it can be concluded that the Alare application is feasible to use to train students' critical thinking skills on reaction rate material.]]>
<![CDATA[Cytotoxic Potensial and Molecular Docking of Essential Oil Piper Aduncum Flowers Against Cervical Cancer Cells ]]>
<![CDATA[Rahmadani, Indah]]>;
<![CDATA[Efdi, Mai]]>;
<![CDATA[Suryati, Suryati]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12479
<![CDATA[Piper aduncum L., commonly known as spiked pepper, is a medicinal plant traditionally used to treat various diseases due to its diverse, active compounds. This article investigates the chemical composition, cytotoxic bioactivity in vitro and the silico of the essential oil (EO) from the flowers of Piper aduncum collected in Padang City, Indonesia. The EO was obtained by hydrodistillation using a Clevenger-type apparatus and characterized by gas chromatography-mass spectrometry (GC-MS). The in vitro cytotoxicity of the EO was assessed against cervical cancer (HeLa cancer cell line) using the MTT assay and further explored through molecular docking approaches. The main constituent of the essential oil from the flowers was dillapiol (31.68%). The LC50 and IC50 values were 31.3471 µg/mL and 65.83 µg/mL, respectively. Computational screening was performed to observe the interactions between active compounds and proteins AKT and ERK2 using molecular docking. AKT and ERK2 act as critical regulators in the PI3K/Akt and ERK/MEK signaling pathways and are potential drug targets for cancer therapy. The compounds used complied with ADMET analysis and toxicity profile. However, it is noteworthy that there have been no previous reports on the essential oil from Piper aduncum flowers from Padang City specifically targeting cervical cancer, which molecular docking studies have complemented. The results suggest that the essential oil from the flowers of Piper aduncum can be further studied as a potential lead in drug discovery for cervical cancer.]]>
<![CDATA[Developing STREAM Based Pancasila Student Profile Strengthening Project (P5) Module on Chemical Bond Lesson ]]>
<![CDATA[Khumairoh, Nurul]]>;
<![CDATA[Okmarisa, Heppy]]>;
<![CDATA[Refelita, Fitri]]>;
<![CDATA[Mahartika, Ira]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12497
<![CDATA[The implementation of Merdeka curriculum has not long been established as the national curriculum, so many schools still lack teaching materials with limited textbooks. This research aimed at developing STREAM (Science, Technology, Religion, Engineering, Art, and Mathematics) based Pancasila student profile strengthening project module on Chemical Bond lesson, and it was conducted with validity test by media and material experts, teacher practicality test, and student response test. Research and Development (RnD) method was used in this research with Design and Development Research (DDR). This research was conducted at State Senior High Schools 14 and 1 Pekanbaru. The research findings showed that the validity scores were 82.6% by media experts with very valid category and 87.45% by material experts with very valid category. The result of teacher practicality test showed that the mean was 93.84%, and it was on very practical category. The last test was student response test, the result was 83.58%, and it was on very valid category. The research findings showed that STREAM-based P5 teaching module developed was very valid, practical, and interesting for students.]]>
<![CDATA[Analysis of The Ionic Bond and Related Concept in High School Chemistry Textbooks in Pekanbaru ]]>
<![CDATA[Ardiansyah, Ardiansyah]]>;
<![CDATA[Fitriyani, Indah]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12532
<![CDATA[Misconceptions about ionic bonding bond and related concept have been revealed by many studies. One source of student misconceptions is high school chemistry textbooks. This research aims to analyze the ionic bonding conceptions contained in Class X high school chemistry textbooks in the city of Pekanbaru. This research uses document analysis techniques. The research sample was 5 high school chemistry books for class X in Pekanbaru City. Misconception are grouped according to Hershey (2004), namely Oversimplifications, Overgeneralizations, Obsolete Concepts and Terms, Misidentifications, and Flawed Research. Most textbooks suffer from Overgeneralizations of the concepts of  chemical stability, ionic bonds, and properties of ionic compound.]]>
<![CDATA[Analysis Antioxidant of Fractions Cocoa Beans (Theobroma Cacao L.) as Potential Herbal Medicine ]]>
<![CDATA[Wibawa, Agung Ari Chandra]]>;
<![CDATA[Pramitha, Dewa Ayu Ika]]>;
<![CDATA[Sanjiwani, Ni Made Sukma]]>;
<![CDATA[Adrianta, Ketut Agus]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12548
<![CDATA[The cocoa seeds of the Gumbrih-Bali region are a natural commodity with great potential for development or processing by local communities. The purpose of this research is to provide information about the antioxidant potential contained in cocoa seeds. Testing the antioxidant capacity in this study uses the Uv-Vis spectrophotometry method at 517 nm wavelengths. Free radical scavanger is measured with control absorption and samples was analyzed with regression curve. The research results proved that the antioxidant (AAI) in the n-butanol fraction show result very strong ability of 4.64 compared to the 0.42 ethyl acetate fraction and 0.46 n-hexane fraction. These results prove that the potential chemical content of cocoa seeds is high in polar solvents (n-butanol fractions) such as flavonoid compounds. Furthermore, this research will be used as a basis for developing natural herbal ingredients such as cocoa which can be consumed in the community to prevent degenerative diseases.]]>
<![CDATA[Transforming the Chemistry Education Curriculum: Students’ Creativity Using AI in Lectures ]]>
<![CDATA[Farwati, Ratna]]>;
<![CDATA[Sari, Indah]]>;
<![CDATA[Fadhilah, Geby Ayu]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12569
<![CDATA[This Research examines of The Usage of Artificial Intelligence (AI) such as ChatGPT and alike of that by Chemistry Education students in the learning process, and provides recommendations for the transformation of the chemistry education curriculum. The results of a survey of 76 students from universities in Palembang and Serang show that ChatGPT and similar AI have become important tools in supporting academic activities, especially in understanding chemistry concepts, compiling reports, and conducting research. However, students face several problems, including the cost of use, lack of knowledge about AI, limited access, and operational difficulties. Therefore, this study recommends the integration of AI into lecture materials, the provision of comprehensive training, increasing access and technical support, and periodic evaluation and adjustment of the curriculum.]]>
<![CDATA[Determination of Tannin Content in Matoa Plants (Pometia pinnata) Based on Variations in Leaf Age ]]>
<![CDATA[Ulandari, Uci]]>;
<![CDATA[Masriani, Masriani]]>;
<![CDATA[Sasri, Risya]]>;
<![CDATA[Ersando, Ersando]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12583
<![CDATA[The growth of the textile industry contributes significantly to environmental pollution from dye waste. The use of natural dyes from plants could be a solution to this problem, although they have weaknesses such as easy fading and less stable colors. Therefore, to improve color stability, a mordant is needed as a color fixative. Biomordants are mordants derived from plants that can be used as substitutes for metal mordants to bind dye to fabric fibers. Matoa leaves are one of the plants with the potential to be used as a biomordant because they contain tannin compounds. This study aims to determine the tannin content of methanol extracts of matoa leaf with various leaf age variations that can be used as a biomordant. The old and young matoa leaves were macerated with methanol for 3 days. The tannin content was determined using the Folin Ciocalteu method using a spectrophotometer Ultra Violet (UV) dual beam with positive control of tannic acid at a wavelength of 755.8 nm. The yield of methanol extract from old matoa leaves was 5.42% and from young matoa leaves was 8.58%. Phytochemical screening of methanol extract of old and young matoa leaves revealed the presence of secondary metabolite content of tannins, phenolics, flavonoids, saponins, triterpenoids, and alkaloids. The total tannin content of methanol extract from old matoa leaves was 0.37% ± 0.03, lower than that of young matoa leaves, which was 0.44% ± 0.06. Based on this research, it can be concluded that matoa leaves contain tannins and have the potential to be used as a biomordant.]]>
<![CDATA[Science Teachers' Perceptions The Merdeka Curriculum Implementation In Entikong Border State Junior High Schools ]]>
<![CDATA[Kusudaryani, Praditya Adi]]>;
<![CDATA[Hairida, Hairida]]>;
<![CDATA[Masriani, Masriani]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12585
<![CDATA[Merdeka Curriculum emphasises the implementation of differentiated learning and considers the unique characteristics of each student. Teachers have an important role in the development and implementation of this curriculum, and must have interpretations in accordance with the provisions of curriculum development. Teachers' perceptions of the Merdeka Curriculum are very diverse and can significantly affect the readiness and quality of learning to be carried out. This study aims to determine teacher perceptions based on aspects of cognition, affection, conation. This research uses a qualitative descriptive method with data collection techniques using questionnaires, in-depth interviews, and documentation. The research questionnaire used is an open question that has been validated for content by 3 Merdeka Curriculum experts and validated for items by Merdeka Curriculum experts and Educational Psychology Experts. The results showed that teachers' perceptions are very important in implementing the Merdeka Curriculum, cognition about general concepts is positive, but for in-depth concepts, teachers' perceptions are negative. Schools that provide gradual training have succeeded in building teachers' positive cognition, although many still think that teaching modules are the same as lesson plans from the 2013 Curriculum. Teachers support the development of Merdeka Curriculum even though they feel there are limitations in understanding and readiness of infrastructure in schools. Teachers are also positive about the support and cooperation between teachers, especially through MGMP, but still feel that they are not fully capable of making their own learning tools. Although the teaching modules are in accordance with the provisions, teachers have not fully implemented differentiation plans or utilised the results of learning style diagnosis in learning.]]>
<![CDATA[The Effect of Predict, Observe, And Explain (POE) Learning Model on Self Efficacy and Student Learning Outcomes on Basic Chemical Law Material ]]>
<![CDATA[Wahyuni, Tutik Sri]]>;
<![CDATA[Rakhmawati, Alfiana Eka]]>;
<![CDATA[Irawati, Ratna Kartika]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12588
<![CDATA[The purpose of this study was to describe the effect of POE (Predict, Observe, and Explain) learning model on: 1) self efficacy, 2) student learning outcomes, and 3) self efficacy and student learning outcomes on basic laws of chemistry. This study used a quantitative approach with an experimental design of the quasi-experiment type, and with a non-equivalent control group design. The population in this study were class X students of SMAN 1 Ngunut, while the samples were class X-E as the experimental class and class X-F as the control class with the sampling technique was purposive sampling. The research instrument in the form of a questionnaire was used to measure student self-efficacy and test questions were used to measure student learning outcomes. Data analysis used prerequisite tests (normality test and homogeneity test), and hypothesis tests use independent sample t-test and manova test. The results showed that: 1) there is an effect of the POE learning model on self-efficacy with a sig value. (2-tailed) 0.000 <0.05, 2) there is an effect of the POE learning model on student learning outcomes with a sig value. (2-tailed) 0.000 <0.05, and 3) there is an effect of the POE learning model on self efficacy and student learning outcomes on the material of basic laws of chemistry with a sig value. (2-tailed) 0.000 <0.05.]]>
<![CDATA[Development of Student Worksheets based Assessment for Learning on Chemical Equilibrium to Improve Student Science Process Skills ]]>
<![CDATA[Utami, Dianita Fitri]]>;
<![CDATA[Agustini, Rudiana]]>
<![CDATA[ Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 4 (2024): August 2024 ]]>
Publisher : <![CDATA[Universitas Pendidikan Mandalika ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.33394/hjkk.v12i4.12617
<![CDATA[This study focuses on creating Student Worksheets (LKPD) that incorporate Assessment for Learning principles to improve students' scientific process skills in chemical equilibrium. The research employs the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model of Research and Development (R&D). The study evaluates the LKPD's effectiveness, practicality, and validity. A one-sample t-test comparing pretest and posttest scores measures effectiveness. Practicality is determined through quantitative descriptive analysis of student feedback questionnaires and activity observation sheets. Validity assessment involves both qualitative and quantitative descriptive analysis using Likert scale validation forms. Results show that the developed LKPD achieved the highest possible validity score (mode of 5) across all aspects. It demonstrated 90.7% practicality and a statistically significant t-test result (p-value of 0.000). These outcomes suggest that the LKPD effectively enhances students' scientific process skills in chemical equilibrium studies. The Assessment for Learning approach and integrated feedback in the LKPD promote active student engagement and foster improved scientific process skills in this subject area.]]>
