Ido not have shape or volume. you cannot see me, but i fill any container in which i am placed. i have weight, but you cannot hold me. what am i?

The identity is a gas. Gas is a state of matter that has weight and occupies volume. Because of the wide arrangement of the molecules, they can move freely. As a result, they are invisible to the naked eye. They have mass and volume, but they usually take the shape and volume of their container.

In my opinión this is the first person