a gas
A liquid has an indefinite shape and a definite volume.
Liquid and gases
volume= mass\Density . so as if shape remain same then its mass and density remain fixed . so therefore no such object , but if we apply Einstein theory of relativity then as it says " after traveling some distance each object looses its mass which is very less i.e in fraction, which in negligible . Therefore each object is the answer.
solid have definite shape , definite volume and close together particles
Matter in a liquid form.
The state of matter that has no definite shape but a definite volume is a liquid.Liquid has definite volume but no shape. It assumes the shape of the vessel in which it is kept.All liquids have a definite volume given a particular fixed temperature.for example, water. it has no definite shape but a definite volume under a given temperature.no matter that has no shape and a definite volume exists.as the temperature is decreased, the molecules in a substance lose energy and they come closer and thus the volume decreases. but when it is heated, the molecules gain energy and move around hitting each other and moving farther and farther still. thus the volume increases on heating.Added:Liquid has NO definite shape but certaily (YES) a definite volume.This volume is not depending on temperature in the sense of not being 'defined' (as erroneously stated above).Its (defined) volume is determined by the amount and kind of matter and depending on (not defined by) temperature.(This means that it has not a constant value for a certain amount of liquid, but it is still a definite volume, meaning that, at each temperature a certain volume is 'defined' for a certain amount of liquid (defined is a derived word from 'definite').
density
Liquid water has a definite volume but takes the shape of its container, while ice has a definite shape and volume due to its rigid structure. Ice molecules are arranged in a fixed pattern, causing ice to maintain its shape, whereas liquid water molecules have more freedom of movement, allowing them to take the shape of their container while maintaining a constant volume.
Matter can be classified into three primary states: solids, liquids, and gases. Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither a definite shape nor volume, expanding to fill their container. Additionally, matter can also be categorized based on its composition into pure substances (elements and compounds) and mixtures (homogeneous and heterogeneous). Each type of matter exhibits unique properties that determine its behavior and interactions.
The volume of a figure depends on the kind of shape it has.
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 )
Elements.