Question

multiple choice (1 point) what phase change is involved when a gas turns into plasma? condensation ionization vaporization/evaporation deposition sublimation melting freezing clear my selection

Explanation:

To determine the phase change from gas to plasma, we recall the definitions of each phase change:

• Condensation: Gas to liquid.
• Ionization: Gas to plasma (when gas is ionized, it forms plasma).
• Vaporization/Evaporation: Liquid to gas.
• Deposition: Gas to solid (sublimation is solid to gas, deposition is reverse).
• Sublimation: Solid to gas.
• Desublimation: Same as deposition (gas to solid).
• Melting: Solid to liquid.
• Freezing: Liquid to solid.

Since the change is from gas to plasma, the correct process is ionization.

Answer:

B. Ionization (assuming the options are labeled A - H with B being Ionization as per the list, but based on the options given, the correct one is "Ionization" among the choices: Condensation, Ionization, Vaporization/Evaporation, Deposition, Sublimation, Desublimation, Melting, Freezing. So the answer is the option with "Ionization".)