Solids, liquids, and gases can be distinguished by the arrangement and motion of their molecules. In solids, molecules have no room to move and are tightly packed together. In liquids, molecules can slide past one another but maintain a fixed volume. Gases have the highest molecular mobility as molecules stay far apart and a gas expands indefinitely to fill its container.

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By Wyatt Keck

2. Solids, Liquids, Gases

3. Tends to keep its form rather than to flow
or spread out like a liquid or gas;
relatively firm or compact filled with matter
throughout; not hollow
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4. Solid molecules motion and arrangement
The solid molecules have no room to move

7. Composed of molecules that move freely among
themselves but do not tend to separate like
those of gases; neither gaseous nor solid

8. Liquid molecules arrangement and motion
The liquid molecules move by sliding past
each other and the shape of their container

11. Substance possessing perfect molecular
mobility and the property of indefinite
expansion, as opposed to a solid or liquid

12. Gas molecules arrangement and motion
The gas molecules have lots of space and stay
away from each other

15. They all have definite shape and volume