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All Journal Jurnal Entropi Sainstek Irfani Tadbir: Jurnal Manajemen Pendidikan Islam Orbital: Jurnal Pendidikan Kimia Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Journal Health & Science : Gorontalo Journal Health and Science Community Jambura FIsh Processing Journal Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Damhil: Jurnal Pengabdian kepada Masyarakat J-CEKI Jurnal Pendidikan Kimia, Fisika dan Biologi

Erni Mohamad

Universitas Negeri Gorontalo

Author-ID : 321308

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Health Professions Industrial & Manufacturing Engineering Mathematics Public Health Social Sciences Other

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Optimasi Briket Bungkil Jarak Pagar (Jatropha Curcas) Melalui Variasi Tepung Tapioka Opir Rumape; Erni Mohamad; Rindi Antika Mohi
Jambura Journal of Chemistry Vol 1, No 1 (2019): February
Publisher : Universitas Negeri Gorontalo

This research was aimed to synthesis and charaeterization of bio briquette from jathropa as fuel alternative. It was tested froxmite malysis and through variation of sharch. The res showed that briquette of jathropa head 7,837% of moisture content, 5,993% of ash, 50,900% volatile compounds, density and 7027,322- 6120,711 kal/g of calorifie value.Keywords: Jatropha, biobriket characteristics, test proximate, tapiocaPenelitian ini bertujuan untuk mengetahui proses pembuatan briket jarak pagar melalui variasi tepung tapioka sebagai bahan alternatif, melalui tahapan penelitian yang meliputi pembuatan briket yaitu pengeringan, karbonasi, dan pencetakan. Karakterisasi briket meliputi uji proksimasi yakni kadar air, kadar abu, kadar senyawa volatil, kadar karbon terikat, kerapatan dan nilai kalor. Dari hasil uji proksimasi menunjukkan bahwa briket dari bungkil jarak pagar memperoleh rata-rata 7,837 %. untuk kadar air, rata-rata 5,993 %. untuk kadar abu, rata-rata 50,900% untuk kadar senyawa volatil, 7027,322 -6120,711 kal/g untuk nilai kalor.Kata kunci: Jarak pagar, karakteristik biobriket, uji proksimasi, tepung tapioka

Pemanfaatan Gulma Siam (Chromolaena odarata L.) Sebagai Adsorben Logam Timbal Erni Mohamad; Intan J. Oputu; Julhim S. Tangio
Jambura Journal of Chemistry Vol 2, No 1 (2020): February
Publisher : Universitas Negeri Gorontalo

This study aims to utilize (Chromolaena odorata L) as a metal adsorbent. The methods used to make activated charcoal are dehydration, carbonization, and activation. The activated carbon is then characterized to obtain activated charcoal that can be applied, then optimized. The results of activated carbon characterization obtained have reached the activated carbon quality requirements based on the Indonesian Industry Standard (SII No. 0258-88). Based on the adsorption test, the optimum pH of Pb2+ (Pb (NO3) 2 (in distilled water) Chromolaena odorata L charcoal activated by NaOH 0.2 M under varying pH (2,3,4,5,6) is at pH 5 with 69.00% absorption. The optimum contact time required for Pb ion adsorption is 4 hours at variation (1-5 hours) with 70.19% absorption. The optimum concentration at variation (concentration 20; 40; 60; 80; 100 ppm) on Pb ion adsorption is 100 ppm with 76.15% absorption. The optimum heating time is a variation of 1.5; 2; 2.5; and 3 hours of Pb ion adsorption is one hour 30 minutes with an absorption of 65.95%. Based on the optimization results, the activated carbon from the Chromolaena odorata L can be used as an adsorption material against the contamination of lead heavy metals (Pb).

ANALISIS DAN DESAIN PERANGKAT PEMBELAJARAN MODEL PROBLEM BASED LEARNING BERBASIS HOTS DAN LITERASI PADA PEMBELAJARAN IPA Alfian Erwinsyah; Ramli Utina; Frida Maryati Yusuf; Erni Mohamad; Muhamad Iksan
Irfani Vol. 18 No. 1 (2022): Irfani (e-Journal)
Publisher : LP2M IAIN Sultan Amai Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30603/ir.v18i1.2423

The purpose of this study is to develop a problem-based learning model based on higher order of thinking skills. The research method used is the ADDIE Research and Development model which is limited to the Analysis and Design Steps. The tools developed are RPP, LKPD, Assessment Instruments. The results of the research are that the HOTS-based and Literacy-based PBL learning device products have real characteristics in learning, arranged systematically with PBL syntax, will develop HOTS and student literacy. and the final product of the learning device meets the valid criteria seen from the validator score. Keywords: Learning Tools, ADDIE, PBL, HOTS

Identifikasi Kemampuan Berpikir Kreatif Siswa dalam Menyelesaikan Soal Open Ended Pada Materi Larutan Elektrolit Dan Non-Elektrolit Sriyanti S Said; Erni Mohamad; Masrid Pikoli; Mangara Sihaloho; Lukman A.R Laliyo; Netty Ino Ischak; Yuszda K. Salimi
Jambura Journal of Educational Chemistry Vol 4, No 2 (2022): Agustus
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v4i2.14491

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kreatif siswa dalam menyelesaikan soal open-ended pada materi larutan elektrolit dan non-elektrolit di SMA Negeri 1 Gorontalo. Pendekatan yang digunakan dalam penelitian ini adalah kualitatif dengan jenis penelitian deskriptif. Responden penelitian ada 43 siswa kelas X IPA 1 di SMA Negeri 1 Gorontalo. Pengumpulan data diperoleh dengan cara observasi, pemberian tes dan dokumentasi. Data yang digunakan berupa data hasil tes kemampuan berpikir kreatif siswa yang menggunakan 3 indikator yaitu indikator kefasihan (fluency), keluwesan (flexibility), dan kebaruan (originality). Hasil penelitian menunjukkan bahwa pencapaian rata-rata kemampuan berpikir kreatif siswa pada indikator kefasihan (fluency) memperoleh nilai 69,37% (kategori baik), indikator keluwesan (flexibility) siswa mendapatkan nilai sebesar 61,53% (kategori baik), dan indikator kebaruan (originality) memperoleh nilai 56,58% (kategori cukup).

PERBEDAAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DAN DISCOVERY LEARNING PADA MATERI HUKUM DASAR KIMIA TERHADAP HASIL BELAJAR SISWA DI SMAN 1 SUWAWA Nur'afni Suaib; Mardjan Paputungan; Hendri Iyabu; Ishka Isa; Erni Mohamad; Wiwin Rewini Kunusa
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 5, No 2 (2022): (November) Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v5i2.7875

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar siswa dengan menggunakan model pembelajaran Problem Based Learning dan Discovery Learning pada pokok bahasan Hukum Dasar Kimia di SMA Negeri 1 Suwawa. Metode penelitian ini merupakan penelitian eksperimen. Jenis penelitian ini termasuk quasi eksperimen (eksperimen semu). Desain yang digunakan adalah Pretest Posttest Non-Equivalent Group Design. Populasi penelitian adalah seluruh peserta didik kelas X IPA dengan sampel penelitian adalah X IPA 1 dan X IPA 2. Untuk mengetahui perbedaan model pembelajaran Problem Based Learning dan Discovery Learning terhadap hasil belajar siswa pada materi Hukum Dasar Kimia penulis memberikan tes dalam bentuk pilihan ganda sebanyak 10 soal dan essay sebanyak 5 soal yang telah diuji validitasnya. Pengujian hipotesis pada penelitian ini menggunakan uji t. Dari hasil pengujian hipotesis diperoleh nilai thitung = 4.38 > ttabel = 1.67722 yang dimana H0 ditolak dan Ha diterima, sehingga dapat disimpulkan bahwa terdapat perbedaan model pembelajaran Problem Based Learning dan Discovery Learning pada materi Hukum Dasar Kimia terhadap hasil belajar siswa.

Deskripsi Keterampilan Generik Sains Siswa dalam Penyelesaian Soal Kimia pada Materi Hidrolisis Garam Marnila Marnila; Erni Mohamad; Wiwin Rewini Kunusa; Astin Lukum; Julhim S. Tangio; Ahmad Kadir Kilo
Orbital: Jurnal Pendidikan Kimia Vol 7 No 1 (2023): Orbital: Jurnal Pendidikan Kimia
Publisher : Chemistry Education Department of Education and Teaching Faculty

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19109/ojpk.v7i1.17128

Generic science skills are very important for students, in addition to being able to improve students' understanding of concepts, by measuring generic science skills teachers can understand the character and skills possessed by students. This study aims to determine students' generic science skills in solving chemistry problems on salt hydrolysis material by high school students of class XI IPA SMA Muhammadiyah Batudaa. The focus of this study is to describe students' generic science skills in solving chemistry problems on salt hydrolysis material. The method used in this study is a qualitative descriptive research method using tests. The data was obtained through a description test, which was done in writing by 66 students at SMA Muhammadiyah Batudaa. The data that has been obtained will then be analyzed first through the code on the answers given by students, as well as through the scores of each component of the student answers. The results showed the achievement of generic science skills, namely indirect observation 78.41% (good), symbolic language 59.85% (less), law of cause and effect 62.06% (sufficient), logical frame 73.48% (sufficient), logical consistency 64.44% (sufficient). In general, the mastery of generic science skills of grade XI science students of Muhammadiyah Batudaa High School obtained an average percentage of 63.42%, including in the sufficient category.

Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4

Identifikasi Miskonsepsi Ikatan Kimia Menggunakan Diagnostic Test Multiple Choice Berbantuan Certainty of Response Index Fadila Karim; Netty Ino Ischak; Erni Mohamad; La Ode Aman; Yuszda K. Salimi
Jambura Journal of Educational Chemistry Vol 4, No 1 (2022): Februari
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v4i1.13239

Penelitian ini bertujuan untuk mengidentifikasi miskonsepsi siswa SMA Negeri 1 Kabila pada materi ikatan kimia dengan menggunakan instrumen Diagnostic test multiple choice berbantuan Certainty of response index. Metode penelitian yang dilakukan adalah kualitatif dengan jenis penelitian deskriptif. Instrumen yang digunakan adalah Three-tier multiple choice. Subjek penelitian yang digunakan adalah kelas XI IPA SMA Negeri 1 Kabila dengan jumlah sampel sebanyak 58 siswa. Data penelitian ini di peroleh dari jawaban siswa pada soal three-tier multiple choice dan diolah berdasarkan pola jawaban siswa yang kemudian di kelompokan ke dalam kategori paham konsep , miskonsepsi error 1, miskonsepsi error 2, miskonsepsi error 3 dan tidak paham konsep. Hasil penelitian menunjukan bahwa kategori miskonsepsi error 1 (MK1) 3,22%, miskonsepsi error 2 (MK2) 8,55%, dan kategori miskonsepsi error 3 (MK3) 19,34%. Sedangkan paham konsep 12,55% dan tidak paham konsep 56,32%.

Analisis Kemampuan Berpikir Kreatif Siswa pada Materi Sel Volta dan Sel Elektrolisis dengan Menggunakan Tes Open-Ended Problem Erni Mohamad; Hendri Iyabu; Wiwiyani Wiwiyani; Mangara Sihaloho; Nurhayati Bialangi; Akram La Kilo
Jambura Journal of Educational Chemistry Vol 5, No 2 (2023): Agustus
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i2.14492

This study aims to determine students' creative thinking abilities in the topics of voltaic cells and electrolysis by using open-ended problem tests at SMA Negeri 4 Gorontalo, to understand teachers' responses to the administered open-ended problem tests, and to gauge students' responses to the administered open-ended problem tests. The research approach employed is descriptive qualitative. The subjects of this study were 62 twelfth-grade science students and 2 chemistry teachers at SMA Negeri 4 Gorontalo. The data utilized in the study consist of the results of students' creative thinking ability tests using open-ended problem tests, as well as the responses gathered from questionnaires regarding the test item model. The research findings reveal that students' creative thinking abilities in terms of fluency aspect are at 47.8% categorized as moderately creative, the flexibility aspect at 45.4% categorized as moderately creative, and the originality aspect at 31.9% categorized as less creative. The results from the teachers' questionnaire responses regarding the open-ended problem test model show a positive response rate of 80%, while the results from the students' questionnaire responses indicate a positive response rate of 61%.

Identifikasi Kemampuan Kognitif Siswa pada Materi Koloid Opir Rumape; Sasmita Pomuato; Erni Mohamad; Netty Ino Ischak; Yuszda K. Salimi; Haris Munandar; Najmah Najmah
Jambura Journal of Educational Chemistry Vol 5, No 1 (2023): Februari
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i1.13215

Penelitian ini bertujuan untuk mengetahui bagaiman kemampuan kongnitif siswa pada koloid di MAN I Kota Gorontalo. Penelitian/; yang dilakukan adalah kualitatif dengan jenis penelitian deskriftif. Instrumen penelitian yang digunakan dalah pilihan ganda tidak beralasan. Subjek penlitian yang digunakan adalah kelas XI IPA MAN I Kota Gorontalo dengan jumlah sampel sebanyak 31 siswa. Data dipoeroleh dari jawaban siswa pada soal pilihan ganda tidak beralasan. Data tersebut diolah berdasarkan jawaban yang kemudian dikelompokkan berdasarkan 4 indikator, setiap indikator1-3 terdiri dari 4 nomor soal dan indikator 4 terdiri dari 3 nomor soal. Hasil penelitian yang diperoleh yaitu kemampuan kongnitif siswa pada “sangat baik” dengan nilai presentasi keseluruhan 83,76% dilihat berdasarkan tabel presentasi kemampuan kongnitif. Pada indikator satu kemampuan kongniti siswa 94,35% kategori “sangat baik”, indikator 2 kemampuan kongnitif siswa 79,84% kategori “baik”, indikator 3 kemampuan kongnitif siwa 78,23% kategori “baik” dan terakhir indikator 4 kemampuan kongnitif siswa 82, 80% kategori “sangat baik”.

Co-Authors Ahmad Kadir Kilo Akram La Kilo Alfian Erwinsyah Amalia Rizki Pautina Arviani Arviani Arwin, Muh Astin Lukum Astin Lukum Bidilah, Siti Aulia Botutihe, Deasy N. Deasy N Botutihe Djalil, Jhodi Pratama Djuandi Olii Erga Kurniawati Fadila Karim Faiga Olifia Dg. Mangawe Fauziah N Kasim Fitria Naim Frida Maryati Yusuf Gevira Datungsolang giu, fitri ani Haris Munandar Hendri Iyabu Intan J. Oputu Ishak Isa Ishka Isa Isna Rahayu Ningsih Jafar La Kilo Jafar La Kilo Julhim S Tangio Julhim S Tangio Julhim S Tangio Julhim S. Tangio karmila karmila Kostiawan Sukamto, Kostiawan La Alio La Ode Aman Lanto Ningrayati Amali Lasim, Windi Sulistiyani Lilis Anggraini Lukman A. R. Laliyo Lukman A.R. Laliyo Lukman Abdul Rauf Laliyo Mangara Sihaloho Mangara Sihaloho Mardjan Paputungan Marnila Marnila Masrid Pikoli Meiske Hasan Merlin Darise Mohi, Rindi Antika Muhamad Iksan Musa, Weni J.A Naim, Fitria Najmah Najmah Nasadi, Nurlaila Neni Purnama Djaipano Netty Ino Ischak Nita Suleman Nur Fadillah Pulukadang Nur'afni Suaib Nurfadilah M. Kasim Nurhayati Bialangi Opir Rumape Pakaya, Agustina H. Perry Zakaria Perry Zakaria Perry Zakaria Pratiwi One Priska Paramata Rahmat S Napu Rahmawati Hilala Ramli Utina Rindi Antika Mohi Roslina Imran Rustam I. Husain Sandi, Fadly Sasmita Pomuato Siti Aisa Liputo Sriyanti S Said Sufriyanto Ibrahim Syarbin, Ruslun A. R. Thayban Thayban Umar Sako, Umar Usman, Yuyan Ali Widya A Habi Wiwin Rewini Kunusa Wiwiyani Wiwiyani Yestin Takowa Yowan, Yowan Yusuf, Novalita Yuszda K Salimi Yuszda K. Salimi Zulfa K Muslimin

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