* Particles are fundamental: The particles that make up a liquid (atoms or molecules) are the basic building blocks of matter. They can't shrink in size.
* Spacing changes: When a liquid cools, the particles slow down and move closer together. This means the average distance between particles decreases, not the size of the particles themselves.
* State change: If you cool a liquid enough, it will eventually freeze. This means the particles become arranged in a more ordered, solid structure. Again, the particles themselves haven't changed size, just their arrangement and movement.
Think of it like this: Imagine marbles in a box. If you shake the box vigorously (like a hot liquid), the marbles will be spread out and move around a lot. If you gently shake the box (like a cool liquid), the marbles will be closer together and move more slowly.
The marbles themselves haven't changed size, just their spacing and movement.
