Acids XP
Water I think
Yes. It can damage tissues.
Sand , paper, oil, baby oil, rocks, gold, dog fur, bricks and/or anything that is in capable of being dissolved
Iron, Cobalt, Nickel First of all, iron (Fe) is a magnetic substance. And so is nickel (Ni), cobalt (Co), dysprosium (Dy), gadolinium (Gd), ceramics as ferrites and others, alloys, some organic...
Any of the elements on the periodic table