0 Members and 1 Guest are viewing this topic.
In physics and chemistry, plasma is a gas, in which a certain proportion of its particles are ionized. The presence of a non-negligible number of charge carriers makes the plasma electrically conductive so that it responds strongly to electromagnetic fields. Plasma therefore has properties quite unlike those of solids, liquids, or gases and is considered to be a distinct state of matter. Like gas, plasma does not have a definite shape or a definite volume unless enclosed in a container; unlike gas, in the influence of a magnetic field, it may form structures such as filaments, beams and double layers (see section 3, below). Some common plasmas are fire, lightning, and the Sun.
Plasma is sometimes called the fourth state of matter. We are familiar with solids liquids and gases. Now as a gas gets hotter the gas molecules move faster and collide more violently. Eventually they collide violently enough for electrons to be ejected from the atoms and the gas turns into a mix of ionised atoms and free electrons. This is a plasma it is very different from a non ionised gas because it conducts electricity and can generate magnetic fields from the motion of separated charges.