Question

what is the fourth state of matter​

Answer 1

Answer:

Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. ... It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.

Answer 2

Plasma is often called “the fourth state of matter,” along with solid, liquid and gas. Just as a liquid will boil, changing into a gas when energy is added, heating a gas will form a plasma – a soup of positively charged particles (ions) and negatively charged particles (electrons).