Plasma is best described as which of the following?

Plasma is best described as which of the following?

• A. A crystalline solid state
• B. A state of matter that is always cold
• C. A type of gas so hot that nuclei cannot hold onto electrons, with protons and electrons moving independently
• D. A superdense liquid

Answer: (C)

Plasma is an ionized gas, meaning atoms are energized enough that electrons are stripped away and travel separately from the positively charged nuclei. This creates a soup of free electrons and ions that conduct electricity and respond strongly to magnetic and electric fields. The description that fits best says the gas is so hot that electrons are no longer bound to nuclei, with protons and electrons moving independently. That captures the essential idea: there are charged particles not bound together as neutral atoms. The other descriptions don’t fit plasma: a crystalline solid has a locked, orderly structure; a statement that plasma is always cold contradicts how plasmas form; and a superdense liquid doesn’t describe the common, ionized-gas nature of plasma.

Plasma is an ionized gas, meaning atoms are energized enough that electrons are stripped away and travel separately from the positively charged nuclei. This creates a soup of free electrons and ions that conduct electricity and respond strongly to magnetic and electric fields. The description that fits best says the gas is so hot that electrons are no longer bound to nuclei, with protons and electrons moving independently. That captures the essential idea: there are charged particles not bound together as neutral atoms.

The other descriptions don’t fit plasma: a crystalline solid has a locked, orderly structure; a statement that plasma is always cold contradicts how plasmas form; and a superdense liquid doesn’t describe the common, ionized-gas nature of plasma.