Question: Have you ever made acid to burn thorough anything

Andrew Fensham-Smith answered on 23 Jun 2015:

Today I made an acid called “aqua regia” which means “Kings water” in latin. You can use it to dissolve gold and I was using it to clean all of my glassware from all the gold which was coating it. It’s horrible stuff and smells really strong!

Acids aren’t very nice because if you spill some on your jeans or something, you might think you have cleaned it off, but later on your jeans will be falling apart!