Because they are 3 dimensional objects having breadth, width and depth.
defnite shape
WATER has no definite shape but has definite volume.
Solids have definite shape and definite volume. Liquids have not definite shape but have definite volume. Gases have neither definite shape not definite volume.
Volume
Volume
definite shape and volume. to keep it simple
gas has no shape and no definite volume. liquids have no definite shape, but a definite volume, and solids have a definite volume and a definite shape
Yes, liquids have a definite volume but not a definite shape, compared to solids that have a definite shape and a definite volume or gasses that have neither a definite shape or volume.
Structure. Solids have definite shape and definite volume. Liquids have definite volume but indefinite shape. Gases have both indefinite shape and indefinite volume.
Solids.
Solids have a definite shape and volume. Liquids have a definite volume, but no definite shape - they take the shape of their container. Gases have no definite volume and no definite shape - they expand to fill their entire container.
Solids have a definite shape and volume. Liquids have a definite volume, but no definite shape - they take the shape of their container. Gases have no definite volume and no definite shape - they expand to fill their entire container.