Description of Critical Thinking Ability at XI IPA 1 Grade of SMAN 7 Padang in Solving Chemistry Problems on Reaction Rate Material. EPK [Internet]. 2022 June 1 [cited 2026 Oct. 24];3(2):9-16. Available from: http://entalpipendidikan.ppj.unp.ac.id/index.php/epk/article/view/252