Free Chemistry Dictionary

Video Example : Plasma

Plasma

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Definition of Plasma

The state that consists of super energetic and super excited particles in the form of ionized gases is plasma

More About Plasma

  • The fluorescent tubes and neon sign bulbs consist of plasma
  • Inside neon sign bulb there is neon gas and inside a fluorescent tube there is helium gas or some other gas
  • The gas gets ionized, that is, gets charged when electrical energy flows through it
  • This charging up creates a plasma glowing inside a tube or bulb
  • The plasma glows with a special color depending on the nature of gas
  • The sun and stars glow because of the presence of plasma in them
  • The plasma is created in stars because of high temperature
  • Heating a gas may ionize its molecules or atoms (reducing or increasing the number of electrons in them), thus turning it into a plasma, which contains charged particles: positive ions and negative electrons or ions
  • Ionization can be induced by other means, such as strong electromagnetic field applied with a laser or microwave generator, and is accompanied by the dissociation of molecular bonds if present’
  • Plasmas are a lot like gases, but the atoms are different, because they are made up of free electrons and ions of an element such as neon
  • They are different and unique from the other states of matter.
  • Plasma is different from a gas, because it is made up of groups of positively and negatively charged particles
  • In neon gas, the electrons are all bound to the nucleus. Whereas in neon plasma, the electrons are free to move around the system.
  • Man-made plasmas are everywhere
  • Charging and exciting of the atoms creates glowing plasma inside the bulb. The electricity helps to strip the gas molecules of their electrons
  • Another example of plasma is a neon sign. Just like a fluorescent lights, neon signs are glass tubes filled with gas
  • When the light is turned on, the electricity flows through the tube. The electricity charges the gas and creates plasma inside of the tube
  • Stars are big balls of gases at really high temperatures. The high temperatures charge up the atoms and create plasma
  • Stars are a good example of how the temperature of plasmas can be very different
  • Fluorescent lights are cold compared to really hot stars
  • In 1920, Indian physicist Satyendra Nath Bose had done some calculations for a fifth state of matter. Based on that, Einstein predicted a new state of matter, Bose Einstein condensate

Applications

  • Plasma research is yielding a greater understanding of the universe
  • Plasma also provides many practical uses
  • New manufacturing techniques, consumer products, the prospect of abundant energy, more efficient lighting, surface cleaning, waste removal, and many more application topics