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INDONESIA
AR-RAZI Jurnal Ilmiah
Published by Universitas Muhammadiyah Pontianak
ISSN : 23027843     EISSN : 25034448     DOI : -
Core Subject : Science,
Chemistry
Jurnal Ilmiah Ar Razi terbit dua kali dalam setahun pada bulan Februari dan Agustus. Jurnal Ilmiah Ar Razi merupakan wahana publikasi ilmiah dari hasil penelitian atau telaah artikel yang dilakukan oleh dosen maupun mahasiswa Program Studi Pendidikan Kimia FKIP Universitas Muhammadiyah Pontianak.
Arjuna Subject : -
Articles 139 Documents
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Deskripsi Kemampuan Pemecahan Masalah Bentuk Molekul Mas Al-Mustaqim Efa Safitri; Rody Putra Sartika; Lukman Hadi
Jurnal Ilmiah Ar-Razi Vol 9, No 1 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i1.2506

Abstract

This research is motivated by the large number of students who have difficulty working on material problems in the form of molecules. This study aims to determine the problem solving skills of class X IPA MAS Al-Mustaqim students in solving material problems in the form of molecules. The research method used is descriptive with case studies. The sample of the research was 16 students of class X IPA Mas Al-Mustaqim. Problem solving ability is measured using a written test in the form of an essay. The results of the study concluded that the ability to understand problems in the molecular shape material was high, the ability to prepare students' completion plans was high, and the ability to carry out completion plans was low.
Deskripsi Kemampuan Psikomotorik Mahasiswa Pendidikan Kimia pada Titrasi Asam Basa Eny Enawaty
Jurnal Ilmiah Ar-Razi Vol 8, No 2 (2020): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v8i2.2133

Abstract

The background of this research is the need to know the ability of Chemistry Education students, who would be chemistry teacher in the future, in using laboratory equipments, especially in acid-base titration. This study aims to describe the psychomotor ability of Chemistry Education students in acid-base titration. The research method used is descriptive with the instrument which is observation sheet and interview guide. The analyses result shows that the average psychomotor ability of Chemistry Education students is 82.16%, which is categorized as very well. These skills include assembling titration tools which is categorized well with an average percentage of 76.38%, pouring NaOH solution into the burette which is categorized very well with an average percentage of 81.94%, taking the solution which is going to be analyzed into the Erlenmeyer flask which is categorized well with an average percentage of 77.78%, conducting titration which is categorized very well with the average percentage of 86.11%, observing the volume of titrant and the color of analyte which is categorized as enough with average percentage of 60.41%.
UJI FOTOSTABILITAS PIGMEN BIXIN PADA BENTONIT DAN BENTONIT TERPILAR-TiO2 Nelly - Wahyuni
Jurnal Ilmiah Ar-Razi Vol 8, No 2 (2020): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v8i2.2295

Abstract

One of the characteristics of the bixin pigment is its low photostability, which causes its limitations. There are many methods to improve the photostability of bixin. This study aims to study the rate of degradation of bixin in the form of an extract that will be impregnated in bentonite and TiO2 pillared bentonite. The photostability test was carried out by continuously illuminating the sample with ultraviolet (UV C) light for nine h. Bixin concentration was observed using a UV-spectrophotometer. The results showed that the impregnation of bixin extract on bentonite could increase the photostability of bixin from 14.4 h to 138.6 h. On the other, impregnation of bixin on TiO2 pillared bentonite increases the rate of bixin degradation. The half-life of bixin offered to this material is only 3.7 h. TiO2 pillared bentonite enrolls as a photocatalyst, which is enhanced photodegradation of bixin pigment. Keywords: bixin, bentonite, photostability, pigment, TiO2-pillared bentonite 
Pengembangan Media Pembelajaran Pop-Up Book pada Materi Struktur Atom Fazrul Aprilyani; Masriani Masriani; Lukman Hadi
Jurnal Ilmiah Ar-Razi Vol 9, No 1 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i1.2513

Abstract

This study aims to determine the feasibility of Pop-Up Book Media on Atomic Structure Material which was developed based on the results of expert tests (expert judgment). The form of this research is research and development (R&D) which adopts the Suyanto and Sartinem development model. The subject of this research is Pop-Up Book Media on Atomic Structure Material. The data collection technique uses indirect communication techniques. The assessment instrument used is in the form of a feasibility questionnaire. Media Pop-Up Book on Atomic Structure Material was validated by each of 3 experts in every aspect, namely, aspects of the feasibility of content, presentation, language and graphics. The results of data analysis show that the Pop-Up Book Media on the Atomic Structure Material developed is very suitable for use in learning in terms of content feasibility with a percentage of 85%, 88% presentation, 85.71% language, and 87.45% graphics with very high criteria.
MODEL SELF ORGANIZED LEARNING ENVIRONMENTS (SOLE) DAPAT MENINGKATKAN KREATIVITAS PADA PELAJARAN KIMIA Maya Mutiasari
Jurnal Ilmiah Ar-Razi Vol 9, No 2 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i2.2948

Abstract

Learning during the covid-19 pandemic requires adjustments, due to the implementation of the Circular Letter of the Ministry of Education and Culture number 4 of 2020 which makes teachers and students unable to meet directly to carry out the learning process but by conducting distance learning (PJJ). Distance learning (PJJ) can take place well, it requires a learning model that is in accordance with the material to be studied, so that students can learn well and remain creative. The purpose of this study is to determine the success rate of implementing the model Self Organized Learning Environments (SOLE) in distance learning, so that it can make students more creative in the application of Gay Lussac's law in everyday. This study uses method best practice with the steps of the SOLE model activity which has three stages of activity, namely asking questions, investigating and reviewing. Assessment is carried out to assess aspects of knowledge, skills and attitude assessment. From the results of the questionnaire, it was found that the Self Organized Learning Environments (SOLE) model was pleasant for 95% of students, increasing students' understanding of the material, which was 78.62%. Meanwhile, from the skill assessment, most of the students have been able to do the practicum well. From the results of the research that has been done, it can be concluded that there is an increase in the creativity of students in chemistry lessons.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK BERBASIS INKUIRI TERBIMBING PADA MATERI SEL ELEKTROLISIS KELAS XII IPA SMA NEGERI 1 SUNGAI KAKAP Marina Ayu Sari; A. Ifriany Harun; Rahmat Rasmawan
Jurnal Ilmiah Ar-Razi Vol 9, No 2 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i2.2672

Abstract

Penelitian ini bertujuan untuk mengetahui tingkat kelayakan dan respon peserta didik terhadap LKPD berbasis Inkuiri Terbimbing pada materi sel elektrolisis kelas XII IPA SMA Negeri 1 Sungai Kakap. Model penelitian ini menggunakan model pengembangan ADDIE yang dikembangkan oleh Dick and Carry. Pengambilan sampel menggunakan teknik purposive sampling pada siswa SMA Negeri 1 Sungai Kakap. Alat pengumpulan data yang digunakan adalah penilaian kelayakan dan lembar respon siswa. Hasil analisis data menunjukkan lembar kerja peserta didik berbasis inkuiri terbimbing dengan rata-rata nilai materi 93,82%, kelayakan kegrafikan 84,80%, kelayakan bahasa 94,00%. Respon siswa terhadap penilaian kelayakan dan uji respon peserta didik sebesar 90,87% dan 82,26% pada materi sel elektrolisis dengan kategori tinggi. Hasil penilaian kelayakan dan uji respon peserta didik terhadap LKPD berbasis Inkuiri Terbimbing pada materi sel elektrolisis dengan kategori sangat layak digunakan dalam proses pembelajaran.
Penetapan Laju Disipasi Insektisida Deltametrin pada Tanah Sawah Alfina Mizriaty
Jurnal Ilmiah Ar-Razi Vol 9, No 2 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i2.2860

Abstract

Penggunaan pestisida adalah hal yang lumrah dilakukan oleh petani di Indonesia. Penggunaan pestisida bertujuan untuk membunuh hama pengganggu sehingga nantinya diharapkan hasil panen menjadi optimal. survey yang dilakukan di desa Sintung, Pringgarata Lombok Tengah menginformasikan bahwa petani selalu menggunakan pestisida selama masa tanam. Salah satu jenis pestisida yang digunakan adalah merk Decis 25 EC (golongan insektisida pyretroid) dengan bahan aktif deltametrin. petani di desa ini menggunakan pestisida tidak sesuai dengan takaran/dosis yang tertera pada kemasan. oleh karena penggunaan yang tidak sesuai takaran, peneliti merasa perlu untuk melakukan analisis laju disipasi insektisida deltametrin pada tanah sawah, karena tanah adalah objek kedua setelah tanaman yang akan terpapar oleh insektisida ini. dikhawatirkan apabila senyawa aktif ini mengendap terlalu lama di tanah, akan menyebabkan kematian serangga dan organisme bermanfaat yang hidup di ekosistem tersebut. Perlu diketahui bahwa laju disipasi adalah kecepatan suatu senyawa dapat terurai di lingkungan. Peneliti menggunakan 3 sampel, yaitu pada hari ke 0, 1 dan 3 setelah perlakuan diberikan (penyemprotan insektisida). Sampel yang diperoleh kemudian di bersihkan, diekstraksi dan kemudian dilakukan analisis dengan menggunakan GC-MS. Hasil kromatogram mengindikasikan adanya kandungan deltametrin pada sampel, yakni berturut-turut sebesar 6.53 ppm; 3.09 ppm and 1.51 ppm, dengan laju disipasi adalah 4 hari.
PENGARUH POE TERHADAP HASIL BELAJAR SISWA PADA MATERI ASAM BASA DAN GARAM Umi Khairah
Jurnal Ilmiah Ar-Razi Vol 9, No 2 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i2.2914

Abstract

Penelitian ini memiliki tujuan untuk menentukan pengaruh penggunaan model pembelajaran POE (Predict, Observe and Explain) terhadap hasil belajar pada mata pelajaran asam, basa dan garam di kelas VII. Menganalisis pengaruh penggunaan model pembelajaran POE terhadap hasil belajar pada kelas VII A dan VII B SMP Negeri 22 Pontianak sebagai sampel penelitian. Bentuk penelitian yang digunakan berupa eksperimen, jenis eksperimen yang digunakan adalah quasi experimental design. Berdasarkan observasi siswa cenderung pasif, kurang memperhatikan guru dan pelajaran berpusat pada guru. Berdasarkan penelitian yang dilakukan diperoleh nilai Effect Size sebesar 1,46. Karena Effect Size > 0,8 yaitu 1,46 > 0,8 maka Effect size tergolong tinggi dilihat dari kurva 0 ke Z penggunaan model pembelajaran POE memberikan pengaruh sebesar 42,79% terhadap peningkatan hasil belajar siswa di kelas VII A SMP Negeri 22 Pontianak.
PENGARUH PENGGUNAAN MEDIA FOCUSKY TERHADAP HASIL BELAJAR SISWA PADA SUBMATERI PEMISAHAN CAMPURAN Elsye Apriliantika; Eny Enawati; Masriani Masriani; Husna Amalya Melati; Maria Ulfah
Jurnal Ilmiah Ar-Razi Vol 9, No 2 (2021): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v9i2.2915

Abstract

This research is based on the problems experienced in schools, namely the problems of the learning media used. This research uses a quasi-experimental form, namely a quasi-experimental design research and the design used is a non-equivalent control group design. This study was to determine the comparison of learning outcomes between classes using Focusky media and classes using PowerPoint media at SMP Negeri 21 Pontianak in Mixed Separation SubMaterial and to know the impact of using Focusky Media on the learning outcomes of seventh grade students at SMP Negeri 21 Pontianak. The research sample was 57 students consisting of 28 students in class VII B, namely the control class and 29 students in class D, the experimental class. Based on the results obtained, the value of the experimental class is greater than the control class. For statistical analysis, the pretest data used a t-test and showed that there were still differences in the pretest results in the two classes with a sig. (2- tailed) value of 0.001 so that the N-Gain test was carried out, obtained a value of 0.48 and was in the medium category. The effect size value shows a value of 46, 78, the results are categorized as moderate so that Focusky media-assisted learning is efficient in increasing student learning outcomes.
ANALISIS KETERAMPILAN BERPIKIR TINGKAT TINGGI PADA SOAL KIMIA SBMPTN Pardiana Pardiana Pardiana; Dedi Irwandi Irwandi; Evi Sapinatul Bahriah
Jurnal Ilmiah Ar-Razi Vol 10, No 1 (2022): JURNAL ILMIAH AR-RAZI
Publisher : Universitas Muhammadiyah Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29406/ar-r.v10i1.2250

Abstract

HOT is verry

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