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Which of the following substances experiences the least change in shape when subjected to a change in pressure?
Plasma
Liquid
Gas
Solid
Solid
Among the common states of matter, a solid possesses a fixed shape and volume due to strong intermolecular forces of attraction, which hold its constituent particles in a rigid, organized structure. Consequently, solids are highly resistant to shape changes when subjected to mechanical pressure.
Among the common states of matter, a solid possesses a fixed shape and volume due to strong intermolecular forces of attraction, which hold its constituent particles in a rigid, organized structure. Consequently, solids are highly resistant to shape changes when subjected to mechanical pressure.
Think of a solid (like a brick) as a group of people holding hands tightly in a grid; it is very hard to move them. A liquid or gas is like a crowd of people in a roomтАФthey can easily shift their positions and flow around to fit the shape of any container.
SS = Solid = Shape Stable
K=тИТV╬ФV╬ФPтАЛ тАФ Bulk modulus relating pressure change to volume change
╧Г=AFтАЛ тАФ Stress experienced by a material under force
Matter is classified by its physical state based on intermolecular forces and particle motion. In solids, particles are tightly packed and vibrate about fixed positions, offering high resistance to deformation under pressure (high bulk modulus and shear modulus). In contrast, liquids and gases lack this rigid structure and can flow, while plasma consists of free-moving ions and electrons, making them highly susceptible to pressure-induced changes in shape or volume.
Solids maintain their shape and volume due to strong inter-molecular bonds.
Liquids have a definite volume but no fixed shape.
Gases and plasmas lack both fixed shape and fixed volume.
The resistance to change in shape is quantified by the material's elastic moduli.
Solids provide structural stability for engineering and construction.
Solids can undergo brittle fracture if the applied pressure exceeds their yield strength.
Building frameworks and foundations.
Manufacturing of rigid containers and machinery parts.
Option A (Plasma) is an ionized gas and highly energetic.
Option B (Liquid) adapts to the shape of the container.
Option C (Gas) fills the entire available volume.
Option D (Solid) maintains a rigid crystalline or amorphous structure.
D is correct тАФ Solids have strong intermolecular forces that maintain their structure, making them the least likely to change shape under pressure compared to liquids, gases, or plasma.
Always remember that resistance to deformation increases as you move from plasma to gas, liquid, and finally solid state.
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