Modern youth will live in the world of quick changes when industrial society will change into information society. That’s why the reform of Lithuanian Education faces changes according to present information requirements. The shortage of appropriate program equipment is a serious obstacle to successful integration of computer science into educational process. Teaching chemistry we can do much accommodating various innovations, creating new teaching facilities, using experiments and modeling programs. Feed-back is very important as well. The knowledge must be tested. Combining ordinary testing with modeling we can achieve good results and educational process would become more attractive, motivation would increase. In this work needs and opportunities of applying computer science in chemistry lessons will be analyzed. Computer appliance in teaching how to solve chemistry problems at school has been created. It consists of three parts: teaching material (triangle „The solving of chemistry problems“), Visual Basic models and TestTool tests. The device will be useful for students who want to learn solving chemistry problems or want to revise the course. The web-page „Solving Chemistry Problems“ is of high quality and meets the needs of learners. Visual Basic models satisfy the teachers requirements and show the best learning way. The tests correspond to the curriculum, are reliable and useful.