QUESTIONS:
1.)How are the molecules of a solid material arrange?
•Molecules in a solid maintain both their own shape and their own volume. Solids are virtually incompressible and have little diffusion beyond the surface layer. The molecular arrangement in solids is a highly organized, tightly-packed pattern with small spaces and molecular motion reduced to vibration in place.
2.)How are the molecules in a liquid substance arranged?
•Molecular Order: Liquids exhibit short-range order because strong intermolecular attractive forces cause the molecules to pack together rather tightly. Because of their higher kinetic energy compared to the molecules in a solid, however, the molecules in a liquid move rapidly with respect to one another.
3.)How are the molecules in gaseous substance arrange?
•Particles in a: gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
4.)Based on the molecular model above, what makes a solid material hard?
•In a solid, these particles are packed closely together and are not free to move about within the substance. Molecular motion for the particles in a solid is confined to very small vibrations of the atoms around their fixed positions; therefore, solids have a fixed shape that is difficult to change.
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