Alternative gas laws mnemonic
There is another mnemonic that can be used to remember what remains constant:
Boyle's law
Once you start boiling a liquid the temperature remains constant.
| Boil | `=` | Constant temperature | |
| Boyle's law | `=` | Constant temperature |
Charles' law

Prince Charles is under pressure all the time but must remain constantly in control.
| Charles | `=` | Constant pressure | |
| Charles' law | `=` | Constant pressure |
Gay-Lussac's law
He loses his sacks (Lussac) so he constantly has no room or volume to store anything.
| Lose sack | `=` | Constant volume | |
| Lussac's law | `=` | Constant volume |