* Have a fixed shape and volume. Because the particles are locked in place, solids maintain their shape regardless of the container they're in.
* Are incompressible. The tightly packed arrangement leaves very little space between particles, so it's difficult to squeeze them closer together.
* Can't flow. The fixed positions of particles prevent them from moving freely past each other.
Think of it like this: Imagine a bunch of marbles in a tightly packed box. They can vibrate slightly, but they can't move around freely.
Here are some other important details:
* The particles in a solid have a strong attraction to each other. This is what keeps them tightly packed together.
* The amount of vibration increases with temperature. As a solid is heated, its particles vibrate more vigorously. This is why solids expand when heated.
Let me know if you want to know more about the different types of solids!
