![]() Siswa akan kesulitan dalam memahami materi termokimia karena mereka mengalami kesulitan pemahaman pada materi stoikiometri. Pemahaman siswa terhadap konsep dasar kimia memiliki peranan penting dalam menentukan hasil belajar mereka pada konsep yang tingkatannya lebih tinggi. ![]() The trial result data from the students were processed by using IBM SPSS Statistics 24 and it showed that nine questions were valid but not reliable. The results showed that the product quality assessment by material expert 92.00% product quality assessment by media expert 92.00% and quality assessment by reviewers (high school chemistry teachers) 94.89 % in the Very Good category. High school chemistry teacher as a reviewer who assesses the questions and tested on students. The research data was obtained by validating the thermochemistry HOTS questions by material and media expert lecturers. The research objects were multiple-choice HOTS questions numbering 20 questions. The respondents of this research were 55 high school students which came from nine different schools. ![]() This research applied Research and Development (R&D) design by using the development model of Borg & Gall. This research aims to develop Higher Order Thinking Skill (HOTS)-based test instruments on thermochemistry in the form of a valid and reliable multiple-choice question.
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