C. Kurniawan
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang
Indonesia

M. Dhiyaulkhaq
Chemistry Education Study Program, Universitas Negeri Semarang
Indonesia

N. Wijayati
Chemistry Department, Universitas Negeri Semarang
Indonesia

K. Kasmui
Chemistry Education Study Program, Universitas Negeri Semarang
Indonesia

D. Nasekhah
SMA Negeri 7 Semarang
Indonesia

M. H. Ismail
Science Education Department, Faculty of Education, Universiti Teknologi MARA, Malaysia