I really like your videos and I have seen you help ppl with curiosity
I wanted you to do this small experiment.
Take three jars
Label them 1,2,3
One should be able to handle high pressure and other low pressure and the other one a normal one.
Put water in those containers and then pressurize, vaccumize(if that's a word) and then put all the three containers in the freezer.
Then which one freezes faster and which one slower.
Explain in details
Like if you want him to do the experiment
Edit: you can replace water with other liquids to insight us more or for fun!