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Chimica Didactica Acta : Journal of Chemistry and Chemistry Education

JCD
Website

Published by Universitas Syiah Kuala

ISSN : 23384522 EISSN : 28096789 DOI : https://doi.org/10.24815/jcd

Core Subject : Science, Education,

Chemistry Education

Chimica Didactica Acta is a peer reviewed journal publishing research articles that address the topics of chemistry and chemistry education and practices. We focus on the topics but not limited to organic chemistry, inorganic chemistry, analytical chemistry, biochemistry, physical chemistry and educational chemistry and practices

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 80 Documents

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APPLICATION OF ONLINE LEARNING ON ACID-BASE TITRATION TOPIC TO IMPROVE STUDENTS’ LEARNING INTEREST Dinda Syiseni; Ade Ismayani; Rusman Rusman
Chimica Didactica Acta Vol 10, No 1: June 2022
Publisher : FKIP USK

Students' interest in learning chemistry, especially in acid-base titration material during the pandemic, makes the learning process ineffective, students tend to be quiet and not interested in learning. The application of learning that can be used during a pandemic is online learning. This study aims to measure students' interest in learning through the application of online learning and to describe student learning activities and student reactions to the application of online learning. The type of research used is quantitative research with quasi-experimental methods and the One Group Posttest-Only Design. This research was conducted at SMA Negeri 1 Banda Aceh with 28 students in class XI MIA 4 taking samples using purposive sampling technique. Collecting data through observation sheets of learning activities and student learning interest questionnaires. The output of the study showed that there were learning activities in the good category with an average value of 90% and 93% observed by the observer. The application of online learning can be used during the current pandemic, seen from the responses of students in the good category with an average score of 76.67. The level of student interest in learning before the application of online learning was 65.71%, after the application of online learning obtained very good results of 77.08%. N-Gain score obtained 32.51 which is included in the medium category. Based on the results of the study, it can be concluded that the application of online learning can increase students' interest in learning.Keywords: Online, interest in Learning, Google Classroom, Acid-Base Titration

HUBUNGAN KEMAMPUAN BERPIKIR FORMAL PESERTA OLIMPIADE KIMIA DENGAN KEMAMPUAN MENYELESAIKAN SOAL OLIMPIADE KIMIA TINGKAT LOKAL DAN INTERNASIONAL Said Ali Akbar
Chimica Didactica Acta Vol 1, No 1 (2013)
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.611 KB)

This research aimed to determine the relationship the relationship formal thinking skills of chemistry olympiad participants with problem solving skills the chemistry olympiad questions. The hypothesis in this research that there is a the relationship formal thinking skills of chemistry olympiad participants with problem solving skills the chemistry olympiad questions. The study population was all students from high school or MAN in Banda Aceh and Aceh Besar district participating in the Olympiad. The Sampling used purposive sampling, is the sample members selected by objective research. This research is a qualitative survey using a quantitative approach. The method used in this study is descriptive. The data was collected using a test instrument. In addition, interviews were also used as supporting data in the study. Processing quantitative data used Spearman rank correlation coefficient, while qualitative in percentage form. The results of the analysis obtained rs value about 0,94. Check the table of values r product moment with df of 14, at a significance level of 5% is obtained r table = 0,532, whereas the significance level of 1% is obtained r = 0,661 table. rs value is greater than the price r table, both at significance level of 5% (0,94 0,532), as well as the significant level of 1% (0,94 0,661). Thus, the alternative hypothesis (Ha) is accepted it means there is a strong positive correlation between the variables X and Y. Therefore, it can be concluded that the ability of formal influence Olympiad participants in solving problems.

ANALYSIS OF SEDIMENTATION TRENDS IN EFFORTS FOR SUSTAINABILITY AT WONOREJO RESERVOIR Novi Andriany Teguh; Nastasia Festy Marginia
Chimica Didactica Acta Vol 9, No 2: December 2021
Publisher : FKIP USK

Sedimentation is a natural problem that always occurs in water structures, especially dams and reservoirs. Wonorejo Reservoir as a multipurpose reservoir also experienced this. Sedimentation can affect the performance of reservoirs and dams. With the accumulation of sediment, the volume of the reservoir will change from time to time, so it is necessary to estimate the volume of sediment during the useful life of the reservoir and dam, so that they can function optimally. In addition, efforts are also needed to deal with the sedimentation. This study was conducted to estimate the volume of sediment that can occur during the useful life of reservoirs and dams, which is 50 years. Using limited data from previous studies, the study was carried out using the literature study method from other studies that have been carried out in other reservoirs and dams in Indonesia. Based on the estimation results, it is estimated that the volume of sediment in the Wonorejo Reservoir at the end of its age will reach 17.6% of the reservoir capacity volume. So it can be concluded that the reservoir can still work optimally. However, these results are not accurate enough due to the limited data available so that proper sedimentation management efforts are still needed. These countermeasures can be adopted from what has been suggested in other studies for reservoirs and dams in Indonesia.

FIRST YEAR UNIVERSITY STUDENTS’ CONCEPTUAL UNDERSTANDING OF PHYSICAL AND CHEMICAL CHANGES (A Preliminary Research) Syahrial Syahrial; Sri Winarni
Chimica Didactica Acta Vol 9, No 1: June 2021
Publisher : FKIP USK

The purpose of this study is to identify first year university students' understanding of the concepts of physical and chemical changes. This study involved 43 students from the 2019 batch of the Chemical Education Study Program (PSPK) of the Faculty of Science and Education (FKIP) of the Syiah Kuala University (USK) which was dominated by women (only 2 men). According to the objectives, the study used a survey method and used an instrument in the form of a questionnaire containing 15 statements. Participants were asked to provide responses via google form by choosing true or false for each statement item on the questionnaire. The results of the analysis show that the understanding of the majority of students is quite good for macroscopic markers or indicators and low for sub-microscopic markers or indicators. Therefore, chemistry teachers need to use molecular (sub-microscopic) images when teaching materials or topics of physical and chemical changes.

APPLICATION OF QUIPPER SCHOOL-BASED BLENDED LEARNING TO IMPROVE STUDENTS' MOTIVATION AND LEARNING OUTCOMES IN ACID-BASED MATERIALS AT SMAN 5 BANDA ACEH Putri Melia; Sulastri Sulastri; Rusman Rusman
Chimica Didactica Acta Vol 10, No 2: December 2022
Publisher : FKIP USK

This research aims to investigate the increase in learning motivation, learning outcomes, learning activities, and student responses to blended learning on acid-base material through Quipper School. The research subjects of class XI MIA 1 students of SMAN 5 Banda Aceh for the 2021/2022 academic year are even semesters involving 32 students. The data collection technique uses a simple random sampling technique. The instruments used in this study were learning outcomes test questions, motivational questionnaire sheets, activity observation sheets, and student response questionnaire sheets. Analysis of learning motivation data using motivational questionnaires adapted from MSLQ using a likert scale, learning outcomes data using LKPD and tests (pretest-postest), activity data using activity sheets and response data collected through questionnaire sheets. The results showed that there was a change in the previous 63.67%, learning motivation after the blended learning process, the students’ learning motivation became 68,15%, this happened in Quipper School-based blended learning. The average completeness of student learning is 80, including the very high category. The positive response of student to blended learning was 72.2%. The activities of students during blended learning get an average score of 95%. Based on the results of the study, it can be concluded that the application of blended learning can change learning motivation and exceed the KKM of student learning outcomes at SMAN 5 Banda Aceh.

HUBUNGAN HASIL PEMBUATAN MIND MAPPING DENGAN HASIL BELAJAR PADA MATERI KROMATOGRAFI KERTAS DIJURUSAN PENDIDIKAN KIMIA IAIN AR-RANIRY Riza Zulyani; Sri Adelila Sari; Komala Pontas
Chimica Didactica Acta Vol 2, No 1 (2014)
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (372.835 KB)

Penelitian ini bertujuan untuk mengetahui hubungan antara hasil pembuatan mind mapping dengan hasil belajarmahasiswa. Populasi yang digunakan dalam penelitian ini adalah seluruh mahasiswa Jurusan Pendidikan Kimia IAINAr-Raniry Letting 2010 sebanyak 49 orang mahasiswa, sedangkan yang menjadi sampelnya adalah mahasiswaJurusan Pendidikan Kimia IAIN Ar-Raniry Letting 2010 unit I sebanyak 28 orang mahasiswa. Pengumpulan datadilakukan melalui lembar observasi, tes, angket dan rubrik mind mapping. Data yang diperoleh diolah denganmenggunakan rumus korelasi Product Moment Pearson yang hasil datanya diolah menggunakan SPSS 16. Hasilpenelitian menunjukkan adanya peningkatan aktivitas mahasiswa dan mahasiswa terlihat antusias mengikuti kegiatanpembelajaran. Persentase keaktifan siswa pada pertemuan pertama sebesar 73,86% dan 93,18% pada pertemuankedua. Hasil belajar mahasiswa dengan penggunaan metode mind mapping secara klasikal mencapai ketuntasansebesar 89,29%. Persentase siswa yang memberi tanggapan positif terhadap penggunaan metode mind mappingmencapai 82,15%. Hasil penelitian ini menunjukkan bahwa: (1) Terdapat hubungan yang positif antara hasil pembuatanmind mapping mahasiswa terhadap hasil belajar pada materi kromatografi kertas.

KESTABILAN ZAT WARNA ALAMI DARI UMBI KETELA UNGU (Ipomoea batatas) Ibnu Khaldun
Chimica Didactica Acta Vol 1, No 1 (2013)
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (150.002 KB)

Researcher has conducted a study on the stability of natural pigments which is derived from sweet potato (Ipomea batatas). The aim of this study was to determine the stability of natural pigments from sweet potato of the variation of heating temperature, long warm-up, long storage and long exposure to sunlight. The populations of this study those fresh sweet potatoes ibaraki varieties as much as 2 kg. The samples used in this study were 100 grams of sweet potatos that have been peeled and grated, then be extracted with 20 mL of distilled water at a temperature of 50 0C and blended so that it became a slurry and then squeezed, then do the identification of anthocyanin compounds in the sample. The extract of sweet potato at pH 6 measured the wavelength of maximum, then anthocyanin concentration was calculated using the pH-differential method. Further, it was tested the stability of the dye to the variation of heating temperature, long warm-up, long storage and long exposure to sunlight at a wavelength of maximum. The results showed that at pH 6 sweet potatos have a wavelength of 536 nm and concentraining anthocyanin with 10,02 mgL-1 of concentrations. Stability of the dye from sweet potatos extracts to heating temperature variation decreased absorbance values by an average of 0,004, a decreased of the heating value of the average absorbance of 0,008 and of storage duration decreased the absorbance values by an average of 0,007. Whereas long exposure to sunlight absorbance values increased by an average of 0,009. The conclution of the researche is the intensity of sweet potatoes extract color was reduced to the variation of heating temperature, heating time and saving time. The intensity of yam’s extract color increased to along exposure of sunlight.

IMPLEMENTATION OF THERMOCHEMISTRY LEARNING VIDEO FOR GRADE XI STUDENTS Ninis Khairunnisa; Ibnu Khaldun; Erlidawati Erlidawati
Chimica Didactica Acta Vol 8, No 1 (2020)
Publisher : FKIP USK

A research has been conducted entitled "The Application of Thermochemistry Learning Videos for Class XI MIA-I MAN 6 Aceh Besar Students". The purpose of this study was to analyze student activities, learning outcomes, and student responses after the application of thermochemistry learning video in class XI MIA-I MAN 6 Aceh Besar. This study uses an approach with a descriptive type of research. The sample in this study were students of class XI MIA-1 MAN 6 Aceh Besar. The results show participant activity increased significantly as seen in the percentage of activity from the first meeting to the fourth meeting in a row, which was 76.52%; 83.33% ; 85.83% and 92.42%. Learning outcomes increased and achieved classical completeness as seen from the percentage of complete learning outcomes, which was 88%. The response of students to the application of learning video media on thermochemical material also showed a positive response with a percentage of 88.2%. Thus, it can be said that student learning outcomes through the application of learning video media have increased and have taken place classically, student activities have also increased at each meeting, and students have responded positively to the application of learning video media.

ANALYSIS OF VITAMIN C AND B1 LEVELS IN SENDUDUK FRUIT (Melastoma malabathricum L.) USING UV-VIS SPECTROPHOTOMETRY METHOD Rejeki Geubrina Putri; Muhammad Nasir; Abdul Gani
Chimica Didactica Acta Vol 8, No 2 (2020)
Publisher : FKIP USK

The fruit of "senduduk" contains a variety of nutrients and vitamins including vitamin C and B1. This study aims to determine the levels of vitamins C and B1 in young and ripe senduduk fruit that grows in coastal areas and in the mountains. The sample of the fruit was extracted with water. The absorbance of the extract of the fruit was then measured using UV-Vis spectrophotometry for vitamin C at a wavelength of 250 nm, while for vitamin B1 was measured at 420 nm. The results showed that vitamin C levels were (G1 = 0.34; G2 = 0.29%; P1 = 0.35; and P2 = 0.31)%, vitamin B1 was (G1 = 0.21; G2 = 0, 10%; P1 = 0.28; and P2 = 0.18)%. The results of the study can be concluded that there is a significant difference in vitamin C levels between young and old fruit, but it is not significantly different for the difference in the place of growth. There is a significant difference in vitamin B1 levels between young and ripe senseng fruit.

THE EFFECTIVENESS OF WORKSHEET-ASSISTED PROBING PROMPTING LEARNING MODEL ON STUDENTS’ CRITICAL THINKING SKILLS IN THE SUBJECT OF REACTION RATE AT MAS ULUMUDDIN LHOKSEUMAWE Pocut Intan; Riska Imanda; Sirry Alvina
Chimica Didactica Acta Vol 9, No 1: June 2021
Publisher : FKIP USK

This study aimed to determine the differences in critical thinking skills (CTS) between classes using the worksheet-assisted probing prompting learning model and those using only probing prompting learning model for the subject of reaction rate at MAS Ulumuddin Lhokseumawe. The research method was quasi-experimental with the Nonequivalent Control Group research design. The sample used were two classes with 30 students in each. The data was collected by using multiple choice test questions. The results showed that there were differences in the critical thinking skills of students who were taught using the worksheet-assisted probing prompting learning model and students who were taught with only probing prompting learning model. Since there was a significant value of 0.000 0.05, then the Ha was accepted while the H0 was rejected. It can be concluded that there is a significant effect of the probing prompting learning model assisted with students’ worksheet on the critical thinking skills of students at MAS Ulumuddin Lhokseumawe.

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Home Page

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Editorial Team

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Contact Name Muhammad Nazar

Contact Email mnazar.unsyiah@gmail.com

Phone +6281345000144

Journal Mail Official chimica@fkip.usk.ac.id

Editorial Address Jurusan Pendidikan Kimia FKIP USK Jl. Tgk Hasan Krueng Kalee Kopelma Darussalam, 23111

Location Kab. aceh besar, Aceh INDONESIA

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Contact Name
Muhammad Nazar

Contact Email
mnazar.unsyiah@gmail.com

Phone
+6281345000144

Journal Mail Official
chimica@fkip.usk.ac.id

Editorial Address
Jurusan Pendidikan Kimia FKIP USK Jl. Tgk Hasan Krueng Kalee Kopelma Darussalam, 23111

Location
Kab. aceh besar,

Aceh

INDONESIA