Final answer:
Plasma is the state of matter characterized by ionized particles, no definite shape or volume, and good electrical conductivity.
Step-by-step explanation:
The state of matter characterized by ionized particles, no definite shape or volume, and good electrical conductivity is called plasma. Plasma is often considered as the fourth state of matter, alongside solid, liquid, and gas. In a plasma, the particles are ionized, meaning they have lost or gained electrons, resulting in the presence of free electrons and positively charged ions. Plasma is commonly found in phenomena such as lightning, stars, and fluorescent lamps.
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