Developing a Virtual Laboratory for Some Chemical Experiments on the Portable Application To Develop Laboratay Skills For Secondary Stage Students.

The world is witnessing an accelerated set of changes and developments in all fields particularly in the field of information and communication technology that causes us to respond to these developments and adapt and harnessed to serve individuals and institutions. Where nations are racing to develop their societies and no matter how different racing styles, they all meet in the direction toward the applied science so shouts are raised loud here and there to reconsider the educational process content, objectives, and means, to allow students in all levels of education to make the most of modern technological means in school performance and acquired a knowledge and skills consistent with the nature of the times in which we live and the rapid development of information and communication technologies and their applications do not provide information only new opportunities but also a trend toward what is called highway for economic, social and educational-related and archeology information and the information age began  fast start, and this contemporary technology already brought fundamental changes in learning systems and the use of computers and information and communications technology in teaching and learning processes and enormous developments represent a fundamental change in producing educational programs where possible production of interactive software based on multiple high-quality tools (Mohammad Abdel Wahab 2007.167)).
And Virtual Reality is built  on the assumption that the most effective education is experimental learning or building on the actual value of the content of which is similar to the application of learning in fact, It is known as one of the technological innovations that use the computer as well as some hardware and software, integrated as a system to create three dimensions imaginative environment, the individual was able to communicate  and interact with them through the senses and some other tools, so that the individual feels that he is able to communicate ,interact and deal with the real situation in all its dimensions, and the degree of realism and immersion and interaction offered by Virtual reality to the individual vary according to Virtual reality itself (Ahmed Kamel, 2002.5)
Future technology is interested in virtual reality interactive technology, a way to transfer the corresponding vehicle that is generated and displayed on the computer it is possible to move them across the internet holograms, and then the user feel it inside
Among the most important changes that have occurred in the field of education in this information age is a shift from teacher-centered education at Teacher-Centered Education to learner-centered education on the Learner-Centered Education. The emergence of e-Learning has facilitated widespread reliance on education centered on the learner and other changes in educational practices (B. C. Lee, J. Yoon and I. Lee, 2009)