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Why does a block of solid keep its own shape instead of flowing?
AIts particles sit in fixed positions
BIts particles have no mass at all
CIts particles are all the same size
DIts particles float freely apart
Answer & Solution
Correct answer: A. Its particles sit in fixed positions
1. In a solid the particles are packed closely in a regular arrangement.
2. Strong forces lock each particle into a fixed position.
3. Because the particles cannot change places, the solid keeps a fixed shape.
4. Particles that floated freely apart would describe a gas instead.
_Source: Siyavula Natural Sciences Grade 8 (CC BY 4.0), The solid state_