cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Daud K. Walanda
Contact Email
jak.untad@gmail.com
Phone
+62813441377264
Journal Mail Official
jak.untad@gmail.com
Editorial Address
Jl. Soekarno Hatta Km 9, Palu - Indonesia 94119
Location
Kota palu,
Sulawesi tengah
INDONESIA
Jurnal Akademika Kimia
Published by Universitas Tadulako
ISSN : 24775185     EISSN : 23026030     DOI : -
Core Subject : Science, Education,
Chemistry Education
Jurnal Akademika Kimia is an electronic open-access journal that aims to publish the latest research results in the area of chemistry education and pure chemistry from academicians, professionals, and other practitioners at all levels of chemistry education. The journal coverage includes the following: current trends of professional chemistry education, educational technology, teacher education, educational science, learning assessment, learning models and development of learning materials, as well as pure chemistry including organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry and other chemistry fields such as environmental chemistry, that emphasis on a broad description of the general methods and processes for the synthesis, modification, and characterization of chemical materials.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 252 Documents
 22   23   24   25   26 
Determination of Fe(III) Concentration by UV-Vis Spectrophotometry Using Flamboyant Flower Extract as a Complexing Agent Fahril Fahril; Sitti Aminah; Tri Santoso; Purnama Ningsih; Nur Indah
Jurnal Akademika Kimia Vol. 15 No. 2 (2026)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2026.v15.i2.pp159-166

Abstract

Aquatic environments contaminated with iron can pose a threat to human health and other organisms, with a threshold concentration of 0.2 mg/L for hygiene and sanitation purposes. This study aims to analyze Fe(III) concentrations in water using UV-Vis spectrophotometry with a natural complexing agent from flamboyant flower extract as a more economical and environmentally friendly alternative to KSCN. Flamboyant flower extract contains anthocyanin compounds with a density of 1.02 g/cm³ that form a red-colored complex with Fe(III) and exhibit maximum absorption at a wavelength of 510 nm. Optimal complex formation conditions were achieved at pH 1 with an extract volume of 0.15 mL and a reaction time of at least 40 minutes. The complex was found to be stable for 2 days. Analysis results showed that the Fe(III) concentration in the tested water sample was 1.09 mg/L.
The Effect of the PBL Model on Science Process Skills and Science Learning Outcomes of Students Abdur Rahman; Tahril Tahril; Purnama Ningsih
Jurnal Akademika Kimia Vol. 13 No. 3 (2024)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2024.v13.i3.pp93-101

Abstract

This study aims to determine the effect of the project-based learning model application on science process skills and students' science learning outcomes. This type of research is a quasi-experimental using a counterbalanced design with a Post-test Only Control Design research, which was carried out in two research sessions. The study population was all students of SMP Negeri 21 Bulubonggu. The sampling technique was purposive. In the first session, the science process skills scores of the experimental class 1 students were 56.40, the experimental class 2 students were 37.95, while the experimental class 1 students' learning outcomes were 70.00, and the experimental class 2's average was 54.50. The results of the independent-sample parametric t-test of science process skills were obtained, p = 0.001, and the learning outcomes obtained were p = 0.000, so that H0 was rejected. The second session of the science process skills scores of the experimental class 1 students obtained an average of 60.60, the experimental class 2 was 72.80, and the learning outcomes of the experimental class 1 students were an average of 62.00, the experimental class 2 was 74, 00. The results of the independent-sample parametric t-test for science process skills were obtained, p = 0.043; the learning outcomes obtained were p = 0.042, so that Ho was rejected. It means that (1) there is an effect of the project-based learning model on students' science process skills, and (2) there is an effect of the project-based learning model on student learning outcomes.

Page 26 of 26 | Total Record : 252

 22   23   24   25   26 

Filter by Year

2019 2026


Reset
Filter By Issues
All Issue Vol. 15 No. 2 (2026) Vol. 15 No. 1 (2026) Vol. 14 No. 4 (2025) Vol. 14 No. 3 (2025) Vol. 14 No. 2 (2025) Vol. 14 No. 1 (2025) Vol. 13 No. 3 (2024) Vol. 13 No. 2 (2024) Vol. 13 No. 1 (2024) Vol. 12 No. 4 (2023) Vol. 12 No. 3 (2023) Vol. 12 No. 2 (2023) Vol. 12 No. 1 (2023) Vol. 11 No. 4 (2022) Vol. 11 No. 3 (2022) Vol. 11 No. 2 (2022) Vol. 11 No. 1 (2022) Vol. 10 No. 4 (2021) Vol. 10 No. 3 (2021) Vol. 10 No. 2 (2021) Vol. 10 No. 1 (2021) Vol. 9 No. 4 (2020) Vol. 9 No. 3 (2020) Vol. 9 No. 2 (2020) Vol. 9 No. 1 (2020) Vol. 8 No. 4 (2019) Vol. 8 No. 3 (2019) More Issue