Question

which phase of matter assumes the volume of its container and has no definite volume? gas solid liquid

Explanation:

Gases have particles that are widely spaced and move freely. They expand to fill the entire volume of their container and do not have a definite volume of their own. Solids have a definite shape and volume, and liquids have a definite volume but take the shape of the part of the container they occupy.

Answer:

Gas