Answer:
Solids
Gases
Liquids
Step-by-step explanation:
Solids have the strongest inter-molecular forces in them, this causes them to have a definite shape and volume.
Gases have the weakest inter-molecular forces in them, this causes them not to have a definite volume or shape. Moreover gases are compressible which means with enough pressure the volume may change for the same number of particles.
Liquids have weaker inter-molecular forces than solids but stronger than gases, this causes them to have a definite volume, but indefinite shape.