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The purpose of this study to identify misconceptions by measuring the level of students understanding in chemical bonding topic using four-tier multiple choice diagnostic test. The research method is descriptive and the stages are carried out as follows; validity judgement test with CVI value of 0,98, proceeding with a preliminary test on 30 islamic senior high school students in South Tangerang with cronbach alpha reliability (α = 0,663) for answers, (α = 0,610) for reasons, (α = 0,693) for confidence level of answer, and (α = 0,652) for confidence level of reason. This study is conducted at tenth grade senior high school in South Tangerang among 77 students. The results of data analysis shows that the overall percentage of students misconception on chemical bonding topic is 15,14% (low category). The level of confidence in this study is highly significant because it can provide information about conceptual understanding of the students. Students encounter the most misconceptions when determining bonds in microscopic. As evidence, misconceptions in the concept of determining microscopic ionic and covalent bonds results to 41,56% (medium category), and metal bonds with 37,66% (medium category). This misconception is due to the students having limited conceptual knowledge and low visual-spatial abilities.