Ani Sutiani,
Chemistry Department , Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. William Iskandar Ps. V, Kenangan Baru, Kec. Percut Sei Tuan, Medan, 20221,
Indonesia
Cinta Johanna Tessalonika Pasaribu,
Chemistry Department , Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. William Iskandar Ps. V, Kenangan Baru, Kec. Percut Sei Tuan, Medan, 20221,
Indonesia
Nendi Gunawan,
Department of Chemistry Education, Faculty of Tarbiyah and Education, Sunan Kalijaga State Islamic University, Yogyakarta, 55281,
Indonesia
Setia Rahmawan,
Department of Chemistry Education, Faculty of Tarbiyah and Education, Sunan Kalijaga State Islamic University, Yogyakarta, 55281,
Indonesia
Jamalum Purba,
Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Williem Iskandar Pasar V, Medan, 20221,
Indonesia
Freddy Tua Musa Panggabean,
Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Williem Iskandar Pasar V, Medan, 20221,
Indonesia
Ani Sutiani,
Department of Chemistry Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan, Jl. Williem Iskandar Pasar V, Medan, 20221,
Indonesia