Why does a solid have a definite shape and volume?
Understand the Problem
The question is asking for an explanation of the characteristics of solids, specifically why they maintain a fixed shape and volume. This relates to the arrangement of particles in a solid and the forces acting between them.
Answer
Molecules in solids are fixed and close together, giving them a definite shape and volume.
Solids have a definite shape and volume because their molecules are fixed in position and closely packed, allowing only vibrational movement.
Answer for screen readers
Solids have a definite shape and volume because their molecules are fixed in position and closely packed, allowing only vibrational movement.
More Information
Fun Fact: Although most solids have a definite shape, there are some like amorphous solids (e.g., glass) that do not have a clearly defined shape and may behave more like supercooled liquids.
Tips
A common mistake is thinking that molecules in solids do not move at all. They do vibrate but are fixed in position.
