I have only played with it once when the water board came to change the washer on my water supply, they used dry ice to freeze the pipe first to stop the flow. Afterwards they just dumped the remainder on the garden and I was able to rescue it (with gloves and a plastic bowl) and play!
I’m not seeing the naughtiness. Maybe if something blew up, that could be less good. Like if you put together a combustible mixture in a soda bottle and shook it.
I don’t have access to any of that stuff. Just as well.
You are supposed to be very sensible and NOT TOUCH IT! , let alone put it in a bowl of hot water and see what happens….
Now about that exploding bottle, all you need are a pack of Mentos sweets and a bottle of diet cola, available at any supermarket ……don’t ask me how I know
I have seen that on Youtube only, never tried it myself (Pepsi and Coke taste disgusting)
Actually I remembered one other fun time many, many years ago when I was working for BHP. They had a distiller for making Oxygen from the atmosphere and one of the by products was liquid nitrogen, I was there doing a training course and they let me play for a while with a small bowl of liquid nitrogen. It is even colder than dry ice.
Dropping a piece of rubber or vegetation in the liquid nitrogen froze it so it was like glass and shattered if you dropped it. I think the fun would have worn off pretty quickly if you worked there but it was a novelty for me.
Going back to the midish 70’s our form master who was also a physics teacher encouraged me and my best mate to make homemade gunpowder which we did.
He did insist that we shouldn’t compress it if we wanted to keep our fingers… sound advice.
I wouldn’t mind having another go but I’d be wary of going into a chemist and asking if they could order me some saltpetre and flour of sulphur…times have changed.
They probably do flag people buying things like that, suspected terrorist
My dad was terrible, just couldn’t resist. He made his own fireworks once, set fire to an old chair my grandad used to sit on in the garden, with grandad still in it!