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240 votes
1 answer
74k views

Why can we smell copper?

If I can smell an object, it means that molecules of it are getting separated from it, so they can reach my nose. As far as I know, metals don't sublimate, especially not in room temperature. However, ...
vsz's user avatar
  • 2,794
14 votes
5 answers
100k views

Which side of an aluminum foil should I put in contact with food?

Aluminum foil has two sides: a matte one, and a shiny one. My question is: which one should I put in contact with food? Criteria are the lowest risk of toxicity and best qualities for food ...
ebosi's user avatar
  • 265
16 votes
3 answers
4k views

Mercury metal: Not toxic?

Now I (and most of us here, I guess) have grown up around "Mercury's toxic! Avoid handling it! Do NOT screw around with this thing, if you value your life" and other equally heartening pieces of ...
paracetamol's user avatar
  • 18.8k
12 votes
4 answers
33k views

What is the product of a copper and vinegar reaction?

I put a copper wire through a hole in the cap of a water bottle, filled the water bottle ~ half way full with vinegar, and left it over night. The part of the wire inside the bottle that wasn't in ...
Bobdabiulder's user avatar
10 votes
4 answers
7k views

Which electrodes do not corrode at all?

I had used spare pieces of metal to perform electrolysis. They all had the disadvantage that they corrode when used as anode - and some of the oxides are toxic (copper, chromium). I've found that ...
Tomáš Zato's user avatar
  • 2,538
7 votes
2 answers
1k views

How to detect lead paint on a bicycle?

Recently I started renovating a bicycle. The frame has been painted probably over 30 years ago, and despite holding well, big patches of rust are showing. So it's time to give the bike a new paint job....
aspyct's user avatar
  • 243
1 vote
2 answers
694 views

Rust on stainless steel caused by salt solution

I am not a chemist and I could really use some help for a practical case. I am fermenting vegetables (cabbage, onions, carrots, etc.). I recently switched from glass and ceramic vessels to stainless ...
tpapz's user avatar
  • 11