Final answer:
Gases are easier to compress than liquids and solids due to the large amount of empty space between gas particles. According to the kinetic-molecular theory, gases have weak intermolecular forces, allowing the particles to move freely and occupy a larger volume.
Step-by-step explanation:
Gases are easier to compress than liquids and solids due to the large amount of empty space between gas particles. According to the kinetic-molecular theory, gases have weak intermolecular forces, allowing the particles to move freely and occupy a larger volume. When a gas is compressed, the gas particles are forced closer together.