SPLAT! There is nothing worse than dropping that egg you were going to use for an omelet on the ground, while cooking in the early hours in the morning. But you just learned a valuable lesson about the physical world; energy can be changed by matter. When the egg hit the floor, it changed its size and shape. If it were a particle, we would say that it changed its state. This happens throughout the entire universe. If you run electricity through a wire to a light bulb, the electricity changes states into light.  If you rotate a magnet by a metal object, the magnetic energy can be changed to electricity.  If you run electricity through a copper wire in a circle, it changes to magnetic energy.  If you make a sound in a sound proof room, the sound disappears, it is changed. Check out the video below for even more exciting ways that particles change state!



Law 3: Energy can be changed by matter.