Because they can move past one another but stay close together
What is a fluid?
A liquid or gas
What do gas particles do?
Move around randomly in all directions at high speeds so they fill their container.
Describe what happens as ice melts.
As ice melts, the particles are no longer fixed in place allowing the ice to become a liquid (water). Graphs showing this have a flat section because temperature cannot rise any further until bonds are broken and the state changes.
