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Chimica Didactica Acta : Journal of Chemistry and Chemistry Education
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 5 Documents
 1 
Search results for , issue "Vol 9, No 2: December 2021" : 5 Documents clear
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (186.422 KB) | DOI: 10.24815/jcd.v9i2.25097

Abstract

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.
ANALYSIS OF STUDENTS' LEARNING DIFFICULTIES ON THE CONCEPT OF BUFFER SOLUTION USING FOUR-TIER MULTIPLE CHOICE DIAGNOSTIC TEST Muhammad Firdaus; Rusman Rusman; Zulfadli Zulfadli
Chimica Didactica Acta Vol 9, No 2: December 2021
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.15 KB) | DOI: 10.24815/jcd.v9i2.25099

Abstract

This study aims to determine the level of students' understanding of each indicator of the buffer solution material and to determine the most difficult indicator in understanding the buffer solution material using the Four-Tier Multiple Choice diagnostic test. This type of research uses a descriptive type of research using a qualitative approach. The subjects of this study were students of class XI Madrasah Aliyyah Swasta Darul Ihsan as many as 15 students who were selected using the simple random sampling technique. The research instrument used was the Four-Tier Multiple Choice diagnostic test instrument sheet and student interview sheets. The results of this study showed that the average percentage of students who understood the concept was 32.3%, did not understand the concept was 38.1%, misconception was 20.6% and the error was 9%. Based on this research, it was found that the most difficult indicator to understand is the indicator to determine the relationship between the buffer solution and the concept of chemical equation and the indicator to calculate the pH of the acid buffer solution. So it can be concluded that the students of class XI Madrasah Aliyyah Private Darul Ihsan have difficulty in understanding the material of the buffer solution.
KRUENG BRAYEUN'S POTENTIAL AS A RAW SOURCE OF DRINKING WATER FOR BANDA ACEH CITY AND ACEH BESAR DISTRICT IN ATTAINING SDGS (SUSTAINABLE DEVELOPMENT GOALS) Yeggi Darnas
Chimica Didactica Acta Vol 9, No 2: December 2021
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (479.011 KB) | DOI: 10.24815/jcd.v9i2.25067

Abstract

This study aims to analyze the potential of krueng brayeuen as a raw source of drinking water for the city of Banda Aceh and Aceh Besar district. Data was collected through document analysis and analysis of water samples taken from 5 different points in the Krueng Brayeuen watershed. Water quality analysis includes metal content of Fe, Mn, ammonia content, Total Dissolved Solid (TDS), and organic matter content. While other qualities include color, odor, taste, chlorine content, and others. The results showed that the water discharge of krueng brayeuen every year showed a promising value to be used as a source of raw water. The results of the water quality test showed that the water in Krueng Brayeuen was tasteless, colorless and odorless. Testing of all other water parameters such as iron content, Mn content, ammonia content and organic matter content met the drinking water standards in general where the levels were still below the threshold set by PP. 22/2021. Based on the results of the analysis of water quality and contamination, it can be concluded that krueng brayeuen water is very suitable to be used as a raw source of drinking water
POTENTIAL ANALYSIS OF MOSQUE WUDHU WASTE AS A PICOHYDRO POWER PLANT Cut Taffazani Fithrian Nazla; Syafrina Sari Lubis
Chimica Didactica Acta Vol 9, No 2: December 2021
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.523 KB) | DOI: 10.24815/jcd.v9i2.25068

Abstract

Ablution is a ritual activity that is quite important in the implementation of prayer. The amount of waste water produced by Ablution activities is large and the reserves are abundant. It is estimated that in one month a mosque with 4325 visitors per week who performs ablution produces 86.5 m3/person/month of ablution waste. This potential waste can be used for various purposes such as watering plants, or aquaculture, and as a pico hydro power plant. The Pico hydro power plant is a term used for hydroelectric power generation capacities below 5 KVA or even smaller, ranging from 200-300 VA. Pico hydro can be generated from a turbine, which is rotated by the natural water flow at a minimum of one meter inclination, the power generated is not too large and is suitable for simple electrical equipment. Ablution waste has the potential to be developed as a pico hydro power plant.
PRACTICUM IMPLEMENTATION ANALYSIS IN CHEMISTRY LEARNING IN HIGH SCHOOL IN BANDA ACEH Hilda Yusmarina; Latifah Hanum; Ratu Fazlia Inda Rahmayani
Chimica Didactica Acta Vol 9, No 2: December 2021
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (174.651 KB) | DOI: 10.24815/jcd.v9i2.25096

Abstract

It has been conducted a research entitled "enforcement analysis of the works in chemistry studies at Banda Aceh high school." The purpose of this study is to analyse the practice of chemistry studies in all high schools in Banda Aceh. The kind of research used was descriptive research with a survey approach. This research was conducted at high school in Banda Aceh. The reasons for the selection of a research facility, based on observations of high school researchers in the city of Banda Aceh is still lack of practical activities. The population in this study are all the teachers of chemistry in Banda Aceh high school of 78 people. The sample used in this study is twenty five of chemistry teachers. The selection of samples is conducted in a random sampling way by the researchers' consideration that the sample was considered homogeneous since high school at Banda Aceh was accredited to A. Data collection techniques were carried out by a wider distribution of questionnaires. The instrument used is a questionnaire. Based on research done on the implementation of the practice in chemistry  at the high school of Banda Aceh, it could be concluded that the performance of the law in chemical study at the city high school of BandaAceh was perfectly great with an average percentage of what obtained was 88%.

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