Plasma is one of the four fundamental states of matter (the others being solid, liquid, and gas). 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.

What does the word 'state' most closely mean in the context of this paragraph?

Form

Explanation

Although each of these words are synonyms for 'state', form is the most appropriate given the context of this paragraph.

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