Chemistry / Unit 1 Chem 0025 short lesson, about 20 seconds
Plasma
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The idea
Plasma is a gaseous state containing enough charged particles that its behavior differs from an ordinary gas.
In practice
A star's interior and a plasma cutting torch are both plasma, set apart from ordinary gas by their particles' response to electric and magnetic fields.
Where people slip
Plasma is not merely "very hot gas" — charged-particle behavior, not temperature alone, defines it as a distinct state.
Your place on the trail
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