Gases adapt most easily to changes in volume.
Gas
Gases undergo changes in volume very easily.solid
A gas will undergo a change in volume more easily than either a liquid or a solid.
When matter undergoes a physical change, its state may change (solid to liquid, liquid to gas, etc.), its shape or size may change, or its physical properties such as density or volume may be altered. However, the chemical composition of the substance remains the same before and after the physical change.
If a substance undergoes a chemical change, its properties change. For example, water, when heated turns into a gas which has a higher volume.
When a solid undergoes motion, its volume remains constant since solids have fixed shapes and densities. However, the shape of the solid can change depending on the type of motion it undergoes. For example, bending or stretching a solid can alter its shape while maintaining its volume.
Because gas takes the shape of it's container, it can change volume quite easily. No matter what container you put it in, a gas takes that shape and volume.
Orange juice does not change volume when it is poured into a different container. Volume will change if the juice undergoes a process such as concentration.
apply mechanical force on a crystal then its length;breadth;height changes,so volume also changes v=l*b*h
When matter undergoes a physical change, its physical properties change. Physical properties include density, color, solubility, conductivity, hardness, kinetic and potential energy of molecules, volume, pressure, temperature etc. One or more of physical properties change when matter undergoes a physical change. Remember chemical properties i.e. chemical composition and it's reaction with other substances remain the same. Also it's mass remains the same. When ice changes to water it's volume decreases, density increases, potential energy of molecules increases. Iodine is grey when solid but gives violet vapours on sublimation. Changing the pressure or volume or temperature of a gas results in change of one or both of the other quantities. These are examples of physical change.
A state of matter that does not have a definite shape or definite volume would be a Gas. Gases are easily compressible compared to liquids, and change to any shape they occupy.
The matter that can change shape and volume is gas.