PCCL | INTERACTIVE CHEMISTRY SIMULATIONS | Flash animations - applet - for free on-line chemistry learning | Interactive Physics Simulations | Interactive Physics Animations | Educational, interactive and animated support to be viewed in class or at home for sciences. Acid-base and redox reactions, synthesis, separation. Physics and Chemistry by a Clear Learning in High School, Middle School, Upper School, Secondary School and Academy. Fun for teens. Free & interactive teaching for courses. Corrected exercises.