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All Journal Journal of Global Research Education Indonesian Journal of Chemical Connections
Sarah Rodiatul
Universitas Negeri Padang
Education Mathematics Social Sciences Other

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Karakterisasi Permukaan pada Aluminium Anodized dengan Variasi Waktu Menggunakan Pewarna Aprilia Melisa; Gifran Noval Rahmadoni; Rahmatul Husna; Sarah Rodiatul
Indonesian Journal of Chemical Connections Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Connections
Publisher : Indonesian Chemical Connections Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.19448737

Abstract

This study investigates the surface characterization of anodized aluminium using natural dyes. Aluminium anodizing is an electrochemical process that produces a thick oxide layer on the aluminium surface. This layer can be coloured using various dyes. The purpose of this research is to analyze the effect of anodizing time on surface characteristics when using natural dyes such as turmeric. The results show that anodizing time significantly affects surface morphology and colour absorption.
Sintesis dan Karakterisasi Spinel Zinc Ferrite (ZnFe2O4) Menggunakan Metode Kopresipitasi Aprilia Melisa; Gifran Noval Rahmadoni; Rahmatul Husna; Sarah Rodiatul
Indonesian Journal of Chemical Connections Vol. 1 No. 1 (2023): Indonesian Journal of Chemical Connections
Publisher : Indonesian Chemical Connections Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.19449879

Abstract

This research focuses on the synthesis and characterization of spinel zinc ferrite (ZnFe2O4) using coprecipitation method. The study examines the structural, morphological, and magnetic properties of the synthesized materials. The results indicate that coprecipitation method produces ZnFe2O4 nanoparticles with uniform size distribution and good crystallinity.
Deskripsi Pemahaman Multirepresentasi Kimia Peserta Didik Pada Materi Reaksi Kimia Fase E SMAN 1 2 X 11 Kayutanam Sarah Rodiatul; Alizar
Journal of Global Research Education Vol. 2 No. 1 (2024)
Publisher : Akademi Akuntansi Indonesia Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62194/at5qa221

Abstract

Reaksi kimia adalah materi abstrak yang memerlukan pemahaman yang mendalam. Materi reaksi kimia merupakan materi yang dianggap abstrak, Reaksi kimia adalah konsep dasar yang penting untuk mempelajari kimia lebih lanjut, mengingat hampir seluruh topik kimia melibatkan reaksi kimia. Penelitian ini bertujuan untuk mengetahui kemampuan multirepresentasi kimia siswa pada materi reaksi kimia. Jenis penelitian ini adalah deskriptif kuantitatif. Instrumen yang digunakan merupakan soal uraian sebanyak 13 soal mencakup tiga level representasi kimia. Penelitian dilakukan di SMA N 1 2 X 11 Kayutanam. Sampel pada penelitian ini berasal dari kelas X fase E1 dengan jumlah siswa sebanyak 31 siswa. Hasil penelitian menunjukkan presentase makroskopik siswa sebesar 79,145 kategori baik, presentase submikroskopik sebesar 77,68 kategori baik, dan presentase simbolik sebesar kategori kurang.
Co-Authors Alizar Aprilia Melisa Gifran Noval Rahmadoni Rahmatul Husna