The aimed of this study is to describe the science process skill of students for chemical education FKIP Untan batch 2014/2015 by applying the learning model named Predict Observe Explain (POE) in determination concentrate of vinegar acid lab experiment. This study uses a pre-experimental method with one-shot case study as a research planning. The sample in this research is student of chemistry education FKIP Untan 2nd semester batch 2014/2015 regular B class, with sampling using purposive sampling method. The instrument of data collection using a structured observation sheets, rubrics assessment science process skills, and interview guidelines. The result of discussion showed that the skills of predicting, doing experiment, observing, interpreting experiment results, conclude and communicating in continuously included in good category, very good category, very good category, quite enough category, very good category and good category
