Here's why:
* Solids: The particles in solids are tightly packed together and have very little space between them. This means there's no room for the particles to be squeezed closer together.
* Liquids: Liquids have a bit more space between their particles than solids, but they are still relatively close together. Applying pressure can only slightly decrease the space between the particles.
Exceptions:
* Extreme pressures: Under extremely high pressures, even solids and liquids can be compressed. Think about the conditions deep inside the Earth's core or within a star.
* Gases: Gases are easily compressed because there is a lot of space between their particles.
Let me know if you have any more questions!
