Learning the periodic table in chemistry, is always seen as difficult, if students have missed a session in class or the teacher has not explained in the right manner.To help such students understand and improve their grades,the following websites were found, which give FREE videos, although a onetime free sign up is required on your part. These videos cannot be downloaded but you can view them online.
Apart from the periodic table, there are several other videos for FREE viewing which explain the basics of chemistry.
A video introduction to general chemistry
The world of chemistry
Suggested Reading: Interactive websites for periodic table