Question

a mass of charged ions that can expand out of an open container would be considered a gas. solid. plasma. liquid.

Explanation:

Plasma is a state of matter consisting of charged ions and free - electrons. It can expand out of an open container, unlike solids and liquids which have definite volume and shape (solids) or definite volume (liquids). Gases are neutral, while plasma is ionized.

Answer:

C. plasma