Simulators for Matter

http://www.physics-chemistry-interactive-flash-animation.com/matter_change_state_measurement_mass_volume/volumes_measurement.htm


http://www.stefanelli.eng.br/en/triple-beam-balance-simulator.html

http://www.physics-chemistry-interactive-flash-animation.com/electricity_electromagnetism_interactive/electric_conductors_insulators.htm


http://www.fossweb.com/delegate/ssi-foss-ucm/Contribution%20Folders/FOSS/multimedia/Magnetism_and_Electricity/electromagnet.html