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3 questions
3
votes
1
answer
2k
views
Removing aluminum "corrosion?"
I have some aluminum alloy, possibly 6063 or 7050 (no clue really) which has corroded. The finish might be silver-anodized but I doubt it due to the high polish, could be urethane. The item is a ...
- 143
1
vote
0
answers
710
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What is the patina formed on copper pennies?
I'm currently taking high school chemistry and I don't quite understand my results from my experiment.
I had two pennies where both were put into a mixture of salt and vinegar. One of the pennies ...
5
votes
1
answer
4k
views
How to test for heavy metal in water?
Is there a way to test if water has toxic heavy metals. Samples to both the water and people who drink it are available. Preferably, it should be done with at hold materials. I could also borrow ...
- 221