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All Journal Jurnal Pendidikan Kimia Indonesia Jurnal Entropi Alchemy : Journal of Chemistry The Journal of Pure and Applied Chemistry Research Jurnal Zarah Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jambura FIsh Processing Journal Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Sibermas (Sinergi Pemberdayaan Masyarakat) Experiment: Journal of Science Education Indonesian Journal of Chemistry and Environment Nautical: Jurnal Ilmiah Multidisiplin Indonesia Indonesian Biodiversity Journal Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Indonesian Biodiversity Journal Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Jurnal Pendidikan Kimia, Fisika dan Biologi Konstanta : Jurnal Matematika dan Ilmu Pengelatuan Alam
Hendri Iyabu
Universitas Negeri Gorontalo
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Education Energy Engineering Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Veterinary Other

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ANALISIS KANDUNGAN MERKURI (Hg) PADA KRIM PEMUTIH WAJAH TANPA IZIN BPOM YANG BEREDAR DI PASAR WONOSARI Padi, Maryam; Suleman, Nita; Iyabu, Hendri; Isa, Ishak; Kilo, Jafar La; Najmah, Najmah
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16266

Abstract

Penelitian ini bertujuan untuk mengetahui ada atau tidaknya logam merkuri dan berapa banyak kadar logam merkuri yang terkandung dalam krim pemutih wajah di pasar wonosari. Dengan banyaknya ditemukan krim pemutih wajah yang mengandung merkuri, peneliti tertarik untuk melakukan penelitian mengenai analisis logam berat yang terkandung dalam krim pemutih wajah. Penelitian dilakukan melalui dua tahap analisis, yaitu analisis kualitatif dengan uji warna dan analisis kuantitatif menggunakan spektrofotometri serapan atom. Hasil analisis kualitatif menunjukkan bahwa semua sampel positif mengandung merkuri, yang ditandai dengan perubahan warna larutan dan terbentuknya endapan. Sementara itu, hasil analisis kuantitatif menunjukkan kadar merkuri dalam masing-masing sampel, yaitu: Sampel A = 0,0045 ppm, Sampel B = 0,0065 ppm, Sampel C = 0,0075 ppm, Sampel D = 0,008 ppm, dan Sampel E = 0,0095 ppm.
The Effect of Ethnoscience Approach Through Problem Based Learning Model on Chemical Literacy Ability of Class XI Students on Reaction Rate Material at SMA Negeri 7 Gorontalo Riryn Tahir; Hendri Iyabu; Julhim S. Tangio; Mangara Sihaloho; Wiwin Rewini Kunusa; Thayban Thayban
Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam Vol. 3 No. 1 (2025): Maret : Pentagon : Jurnal Matematika dan Ilmu Pengetahuan Alam
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/pentagon.v3i1.388

Abstract

The research aims to determine the effect of the ethnoscience approach through the problem-based learning model on the chemical literacy skills of Grade XI students in the reaction rate material at SMA Negeri 7 Gorontalo. The research employs a quasi experimental method with a nonequivalent control group design. The sample consisted of Grade XI IPA ( Natural Science) students from SMA Negeri 7 Gorontalo. The instrument used in this research was an essay test. Data processing and analysis were conducted using Microsoft Office Excel and SPSS version 16. The hypothesis test results on students’ post-test data using the Mann-Whitney test at a significance level of α = 0.05 showed that the Asymp. Sig. (2-tailed) value was less than 0.05 (0,002 < 0,05). Therefore, H1 was confirmed, and H0 was rejected. The N- Gain test results also indicated that the ethnoscience approach through the problem-based learning model was moderately effective in improving students’ chemical literacy skills in reaction rate material, with the experimental class achieving an N-Gain score percentage of 57.13% (moderately effective category), while the control class achieved a percentage of 31.42% (ineffective category). In conclusion, the ethnoscience approach through the problem-based learning model significantly affects students’ chemical literacy skills in reaction rate material.
Pemanfaatan Asap Cair dari tempurung Kelapa sebagai pengawet dalam Proses Pengolahan Ikan Layang (decapterus sp) yang Berada di Perairan Gorontalo Riskawati Pomolango; Ishak Isa; Hendri Iyabu
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 3 No. 1 (2025): Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v3i1.374

Abstract

 This research aims to analyze the effect of storage duration on the quality of flying fish soaked in coconut shell liquid smoke. The main focus of the research includes testing water and phenol content, as well as evaluating the resistance of liquid smoke to sensory qualities, such as taste, aroma and texture of flying fish. The research used liquid smoke with varying concentrations of 0%, 3%, 5% and 7%, with a soaking time of 30 minutes. Data analysis was carried out using SPSS version 26 with the ANOVA test method. The results showed that the addition of liquid smoke with different concentrations had a significant influence on water content, phenol content and organoleptic parameters of flying fish.    
The Effect of STEM (Science, Technology, Engineering, and Mathematics) Learning Model on Critical Thinking Ability of Students on Colloid Material Lasim, Windi Sulistiyani; Musa, Weny J.A; Mohamad, Erni; Laliyo, Lukman Abdul Rauf; Iyabu, Hendri; Sihaloho, Mangara
Jambura Journal of Educational Chemistry Vol 7, No 1 (2025): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v7i1.28516

Abstract

This research focuses on Natural Science learning, especially colloid material, where teaching is still dominated by the lecture method. Learning models that encourage students to make direct observations through experiments are rarely applied. This causes students to be less trained in solving problems, so their critical thinking skills are not optimally developed. This study aims to determine the effect of STEM (Science, Technology, Engineering, and Mathematics) learning model on students' critical thinking skills on colloid material at SMA Negeri 1 Telaga. The research design used was pre-experiment with one group pre-test post-test design. The research sample consisted of 29 students selected by census/total sampling. Data collection was done through critical thinking skills test. The results showed that the average percentage of students' critical thinking skills in the pre-test was 46.11%, which was in the medium category, and in the post-test it increased to 83%, which was in the very high category. This shows that the STEM learning model can improve students' understanding and critical thinking skills. The statistical test shows a significance value of 0.000 < 0.05, which means H1 is accepted and H0 is rejected. Thus, it can be concluded that the STEM learning model has a positive influence on students' critical thinking skills.
ANALISIS KANDUNGAN MERKURI (Hg) PADA KRIM PEMUTIH WAJAH TANPA IZIN BPOM YANG BEREDAR DI PASAR WONOSARI Maryam Padi; Nita Suleman; Hendri Iyabu; Ishak Isa; Jafar La Kilo; Najmah Najmah
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16266

Abstract

Penelitian ini bertujuan untuk mengetahui ada atau tidaknya logam merkuri dan berapa banyak kadar logam merkuri yang terkandung dalam krim pemutih wajah di pasar wonosari. Dengan banyaknya ditemukan krim pemutih wajah yang mengandung merkuri, peneliti tertarik untuk melakukan penelitian mengenai analisis logam berat yang terkandung dalam krim pemutih wajah. Penelitian dilakukan melalui dua tahap analisis, yaitu analisis kualitatif dengan uji warna dan analisis kuantitatif menggunakan spektrofotometri serapan atom. Hasil analisis kualitatif menunjukkan bahwa semua sampel positif mengandung merkuri, yang ditandai dengan perubahan warna larutan dan terbentuknya endapan. Sementara itu, hasil analisis kuantitatif menunjukkan kadar merkuri dalam masing-masing sampel, yaitu: Sampel A = 0,0045 ppm, Sampel B = 0,0065 ppm, Sampel C = 0,0075 ppm, Sampel D = 0,008 ppm, dan Sampel E = 0,0095 ppm.
ANALISIS KANDUNGAN LOGAM TIMBAL (Pb) DAN KADMIUM (Cd) DI PANTAI KURENAI DAN PERAIRAN PELABUHAN DI GORONTALO Febriyanti Andimala; Hendri Iyabu; Jafar La Kilo; Ishak Isa; Nita Suleman; Wiwin Rewini Kunusa
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 7, No 3 (2024)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v7i3.16267

Abstract

Logam berat adalah unsur alam yang tidak dapat dihancurkan. Penelitian ini bertujuan untuk mengetahui keberadaan dan kadar logam Pb dan Cd di Pantai Kurenai dan Pelabuhan Gorontalo. Sampel dianalisis menggunakan AAS. Hasil analisis menunjukkan kadar Pb di Pantai Kurenai: titik I = 0,0240 mg/L, titik II = 0,0843 mg/L, dan titik III = 0,1084 mg/L. Di Pelabuhan Gorontalo, kadar Pb: titik I = 0,1325 mg/L, titik II = 0,6144 mg/L, dan titik III = 0,2289 mg/L. Kadar Cd di Pantai Kurenai: titik I = 0,0076 mg/L, titik II = 0,0218 mg/L, dan titik III = 0,0189 mg/L. Di Pelabuhan Gorontalo, kadar Cd: titik I = 0,0047 mg/L, titik II = 0,0005 mg/L, dan titik III = 0,0100 mg/L. Menurut Peraturan Pemerintah No. 22 Tahun 2021, kadar Pb di Pantai Kurenai dan Pelabuhan Gorontalo telah melebihi standar, sementara kadar Cd di Pantai Kurenai telah melebihi standar, namun di Pelabuhan Gorontalo belum.
Identifikasi Senyawa Metabolit Sekunder Ekstrak Etanol Cangkang Sacha Inchi (Plukenetia volubilis L.) Astria Endesei; Yuszda K. Salimi; Netty Ino Ischak; Ahmad Kadir Kilo; Hendri Iyabu; La Ode Aman
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 3 (2025): Mei : Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i3.281

Abstract

This study aimed to identify the secondary metabolite compounds present in the ethanol extract of Plukenetia volubilis L. (sacha inchi) shells through phytochemical screening and LC-MS analysis. The extraction was performed using the maceration method with 95% ethanol as solvent, resulting in a yield of 47.33%. Qualitative phytochemical tests revealed the presence of alkaloids, flavonoids, tannins, terpenoids, saponins, and glycosides in the extract. Further LC-MS analysis tentatively identified several phenolic and flavonoid compounds with known biological activities, including sinapinic acid, 1-o-sinapoylglucose, and azelaic acid from the dicarboxylic acid group. The presence of these compounds highlights the potential of sacha inchi shell extract as a natural antioxidant and antidiabetic agent. These findings support the valorization of sacha inchi agricultural waste as a promising raw material for pharmaceutical and nutraceutical applications.
Pengaruh Model Pembelajaran Quantum Teaching terhadap Hasil Belajar Siswa SMA Pada Materi Laju Reaksi Harni Anhar S. Ambololo; Weny J.A. Musa; Erga Kurniawati; Mangara Sihaloho; Hendri Iyabu
Jurnal Pendidikan Kimia, Fisika dan Biologi Vol. 1 No. 4 (2025): Juli: Jurnal Pendidikan Kimia, Fisika dan Biologi
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/jupenkifb.v1i4.400

Abstract

This study aims to identify differences in student learning outcomes between those who receive learning using the Quantum Teaching model and those who receive conventional learning on the material of reaction rates at SMA Negeri 1 Tapa. This study is a quantitative study that applies a quasi-experimental method through a control group design with pretest and posttest. The results of the study indicate that after the application of the Quantum Teaching learning model in the experimental class and the use of the conventional learning model in the control class, there was an increase in student learning outcomes. The average pretest score of the experimental class was 34.37 and the posttest score reached 77.31, while for the control class, the average pretest score was 39 and the posttest score was 58.21. It can be seen that both groups of classes showed significant progress , which can be seen from the higher scores in the experimental group when compared to the control group . The hypothesis was tested through a mean test ( t- test ). The results of the Paired Sample t-test in the experimental group showed a significant difference between the pretest and posttest results, with a significance value of 0.000 , which is much lower than the limit of α = 0.05. This study shows that learning using the Quantum Teaching model has a positive impact on improving students' conceptual understanding.
Analisis Motivasi Belajar pada Materi Asam Basa Selama Masa Pandemi Covid-19 Daing, Hardianti; La Kilo, Akram; Iyabu, Hendri; Alio, La
Jambura Journal of Educational Chemistry Vol 4, No 1 (2022): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v4i1.13240

Abstract

Penelitian ini bertujuan untuk mengetahui motivasi belajar pada materi asam basa siswa kelas XI di SMA Negeri 1 Gorontalo selama masa pandemi Covid-19. Penelitian kualitatif deskriptif ini dilakukan pada siswa kelas XI di SMA Negeri 1 Gorontalo. Responden penelitian 150 siswa. Instrumen yang digunakan adalah quesioner dengan wawancara motivasi belajar intrinsik dan motivasi belajar ekstrinsik siswa. Hasil penelitian ditemukan motivasi belajar intrinsik dan ekstrinsik siswa secara keseluruhan memiliki tiga kategori yaitu kategori sangat tinggi, tinggi dan cukup tinggi, untuk aspek motivasi belajar intrinsik siswa yaitu keinginan diri sebesar 84%, kepuasaan sebesar 87%, kebiasaan baik sebesar 84% dan kesadaran sebesar 80%. Untuk rata-rata dari motivasi belajar intrinsik siswa memperoleh nilai 84% dengan kategori sangat tinggi sedangkan untuk aspek motivasi belajar ekstrinsik siswa yaitu pujian sebesar 81%, nesehat sebesar 85%, semangat sebesar 82%, hadiah sebesar 77%, hukuman sebesar 79% dan meniru sesuatu sebesar 86%. Untuk rata-rata dari motivasi belajar ekstrinsik siswa memperoleh nilai 82% dengan kategori tinggi.
Pengaruh Model Pembelajaran NHT (Numbered Heads Together) dengan Bantuan Multimedia Interaktif Terhadap Hasil Belajar Siswa pada Materi Laju Reaksi Iyabu, Hendri; Ischak, Netty Ino; Supriadin, Yogi; Alio, La
Jambura Journal of Educational Chemistry Vol 3, No 2 (2021): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v3i2.11897

Abstract

Tujuan dari penelitian ini adalah untuk untuk mengetahui pengaruh model pembelajaran Numbered Heads Together (NHT) dengan bantuan multimedia interaktif terhadap hasil belajar siswa pada materi laju reaksi. Penelitian ini merupakan penelitian Kuantitatif. Subjek penelitian adalah siswa kelas XI IPA1 dan IPA2 SMA Negeri 1 Telaga Biru, berjumlah 64 siswa, dengan menggunakan rancangan penelitian “Posttest-Only Control Design”. Instrumen penelitian yang digunakan adalah tes essay sebanyak 13 nomor soal yang digunakan untuk mengetahui pengaruh model pembelajaran NHT (Numbered Heads Together) dengan bantuan multimedia interaktif terhadap hasil belajar siswa kelas XI IPA di SMA Negeri 1 Telaga Biru pada materi laju reaksi. Pengujian hipotesis data pada hasil penelitian diuji menggunakan uji-t. Berdasarkan kriteria pengujian H¬¬0 ditolak jika thitung  ttabel pada taraf signifikan 0,05. Hasil penelitian adalah adanya pengaruh model pembelajaran NHT (Numbered Heads Together) dengan bantuan multimedia interaktif terhadap hasil belajar siswa kelas XI IPA di SMA Negeri 1 Telaga Biru pada materi laju reaksi. Berdasarkan pengujian tersebut diperoleh thitung = 5,026  ttabel = 1,999, maka hipotesis H0 ditolak dan H1 diterima.
Co-Authors Abas, Ramona Nintias R. Abdullah, R. Abdullah, Romario Adjami, Eka Nur Fadliya Ahmad Kadir Kilo Akram La Kilo Andimala, Febriyanti Anita Muhammad Arviani Arviani Asda Rauf Astin Lukum Astria Endesei Balong, Sulsitiawati Daing, Hardianti Deasy N. Botutihe Dewi Wahyuni K. Baderan Djafar, Yuliyanti Wahab Djalil, Jhodi Pratama Doly Prima Silaban Erga Kurniawati Erni Mohamad Febriyanti Andimala Haris Munandar Harni Anhar S. Ambololo Ishak Isa Ishka Isa Ismail, Siti Hardina Iswan Dunggio Ivani Kusnadi Suteno Jafar La Kilo Jafar La Kilo Julhim S Tangio Julhim S. Tangio La Alio La Alio La Ode Aman Labuga, Ditawati Lasim, Windi Sulistiyani Luawo, Aprilia Lukman A. R. Laliyo Mangara Sihaloho Mantuli, Mohamad Alan Mardjan Paputungan Marini Susanti Hamidun Maryam Padi Masrid Pikoli musa, weni ja Najmah Najmah Najmah, Najmah Nani, Srimukmin Nento, Tia Dwi Lestari Netty Ino Ischak Ningkaula, T. A. Nita Suleman Nur&#039;afni Suaib Nurhayati Bialangi Nurpatima, Nurpatima Opir Rumape Padi, Maryam Pakuna, Nurpepi Riryn Tahir Riskawati Pomolango Romario Abdullah Sabora, Ririn S. Samosir, Andeston Sumandoli Sarmini A Iladat Sindy atteri warda Suchi Wulandari Dai Sukirman Rahim Suleman Duengo Supriadin, Yogi Suteno, Ivani Kusnadi Thayban Thayban Tiro, Lusiani La Verayana, Verayana Weny J. A. Musa Weny J.A. Musa Wisna Taniyo Wiwin Rewini Kunusa Wiwiyani, Wiwiyani Yahyu Tanaiyo Yuszda K Salimi Yuszda K. Salimi