Physics
What causes matter to change phases?
Quick fact
The main states of matter are solid, liquid, gas, and plasma.
Why this is interesting
The same substance can become a solid, liquid, or gas depending on how its particles behave.
Read the full explanation
Understanding What causes matter to change phases?
Changes in temperature and pressure affect how particles move and interact with each other.
A deeper explanation
The behaviour of matter emerges from microscopic interactions between atoms and molecules, connecting physics with chemistry.