From what I remember it was the school master store so could have been a large lump, plus we also had other -iums so could bave been lithium. It was 30 years ago FFS. But i do remember the toilet was blown apart.

What do you called diced bacon ? Peppa Pig puzzle.

Actually someone at my school stole a lump of sodium, oil cloth wrapped from chem stores. Was being looked for so he threw it down the toilet. Luckily it took a while for it to unwrap and he wasn't there when it blew the toilet apart.

CDs .. were a cheap way to provide music. They were tout d as invincible. Scratch easy. They're cheaper to make and smaller than vinyl, but came out more expensive. Fidelity, not sure about the quality. There's nothing to miss about CDs. Oh and vinyl often gave you awesome inserts, lyrics, pictures etc. CDs often had barest minimum cardboard inserts.

What actually is required is, clean energy, infrastructure to not worry about travelling long distances, longer ranges, cleaner manufacturing (in the UK infrastructure isn't sufficient, and of course common sense wasn't used and there's no ISO single charging Point). Long way to go yet.