Nope!! No definite shape or size!
The liquid phase
The forces of attraction between gas molecules is too weak for them to mantain any kind of definitive shape.( solids only have a shape because there are strong intermolecular forces between solid molecules). The reason for gas molecules not being able to mantain a fixed volume is also the same, the inter atomic forces are too weak to prevent spreading of gas molecules. Your looking for ( gas )
Only solid matter has a definite shape
Because gas has no shape and gases adopt the shape of that container in which gas is placed.
"solids"
A liquid has a definite size but no definite shape. In contrast, a solid has definite size and shape, and a gas has no definite size or shape.
a gas
Yes. A gas will take on both the shape and size of tis container.
The shape and the size of a toy balloons doesn't depend on the kind of gas inside.
A gas has no definite shape or volume.
Solids. Gas and liquids take the shape of their containers and therefore don't have a definite size or shape
A solid has both a definite size and shape. A liquid has a definite size but no definite shape. A gas has neither a definite size nor shape.