%L UNY42600 %A Pangestika Nur Afnia %X This study was to determine the significant difference in motivation to learn chemistry of students before and after the use of acid-base virtual laboratory of those between students who use acid-base virtual laboratory in practicum activity and who do not of those if prior knowledge is statistically controlled. This study was research experiment with one factor design, two variables, and one co-variable. The factor is learning media, the variables are motivation and learning achievement, the co-variable is prior knowledge. Two samples are experiment and control classes. The data were collected by documentation technique, test, and questionnaire. The difference of motivations and achievements use analyzed using paired sample t-test, independent sample t-test, and covariant test. The results showed that there is any significant difference in the motivation of students before and after the using of acid-base virtual lab, there is no significant difference in the increasing of motivation to learn chemistry or not between the students who used acid-base virtual lab in practicum activity with who did not, and there is no significant increasing in achievement and motivation to learn chemistry if prior knowledge is statistically controlled %I Fakultas Matematika dan Ilmu Pengetahuan Alam UNY %D 2016 %T THE INFLUENCE OF THE USING OF VIRTUAL LABORATRY ON THE CHEMISTRY LEARNING ACHIEVEMENT AND MOTIVATION OF SCIENCE STUDENTS OF SMA NEGERI 1 SEWON BANTUL ELEVENTH GRADE SECOND SEMESTER ACADEMIC YEAR 2015/2016