Which state of matter has variable density, and will expand to fill whatever volume in which it is confined?

1 Answer
anor277
Aug 6, 2017

Is there a question here?

Explanation:

Do you speak of gases? These definitely have mass, and occupy space uniformly up to the volume of the container in which the gas is confined. Of course, condensed phases, solids, and liquids, ALSO have mass, and their more or less constant density necessarily means that they occupy some volume......but usually this volume is miniscule compared to that occupied by a gas.

Anyway, you will have to refine your question.

Related questions
See all questions in What is Matter?
Impact of this question
2006 views around the world
You can reuse this answer
Creative Commons License