Middle school8 min

States of matter and phase transitions

The three states, the six phase transitions and their names, and why temperature holds steady during a plateau.

The essentials

1

The three states

Solid: own shape and own volume — particles vibrate in place. Liquid: own volume, container's shape — particles slide past one another. Gas: neither shape nor volume of its own — particles fill all available space.
2

The six phase transitions

Members only

3

Mass is conserved, volume is not

Members only

4

The temperature plateau

Members only

ƒWrite my own sheetOr start from a blank page: rewriting a concept in your own words is how it sticks.