Free online chemistry
lessons for elementary school, middle school and high school.
Take advantage of scientific resources that can be used freely to discover chemistry, the science of matter and its transformation
Water, states of matter, atom, molecule, chemical reaction, ion, combustion, metal ...
Electric circuit, current, conductor, insulator, Ohm's law, series and parallel circuit, circuit diagram ...
motion, speed, trajectory, mass, weight, rotation, kinetic energy, Isaac Newton ...
Light, laser, shadow, propagation of light, ray, converging and diverging lens, color ...