SElms' Exploration General Computer Science Chemistry Psychiatry Science Odyssey Some virtual experiments in all areas of science. Electricity in Computers A great site from Intel in which you can do simple on-line experiments to help you understand the basic building blocks of computers Digital Information How do computers "think?"  They use numbers and switches.  These lessons explain it and let you explore the idea. Chem4Kids A great overview of matter, atoms, the periodic table and chemical reactions. pH Factor Try some on-line experiments to help you understand this important concept. Polymers are Everywhere Polymers are long strands of atoms.  Find out why they are important. Atom Builder Try your hand at creating an atom DNA Workshop Can you replicate a strand of DNA? Psychology Science Experiments Tons of experiments in many different areas.