Why and how these two elements react?
I came up with this wonder when I was told to check my lipstick for the presence of Pb-which of course would be bad. This is supposed to be detected by putting some lipstick on a finger and rubbing a gold jewel on it. If black colour is produced, then Pb exists.
2007-04-10 22:36:37 · 4 answers · asked by Lilly26 3 in Science & Mathematics ➔ Chemistry
I know there are laws, but I don't think we should fully trust the companies. Haven't you heard of the recent example with the fruit juice and vitamin C? Also, my lipstick did produce a black colour.
2007-04-10 22:50:22 · update #1
The colour is produced on the lipstick, the gold stays perfectly clean and shiny.
2007-04-10 22:51:15 · update #2
Chances of finding lead in modern lipstick are poor to none. If The black reaction occurs, it is because of some other reaction.
2007-04-11 10:26:46 · answer #1 · answered by Brian T 6 · 0⤊ 0⤋
Au and Pb are some of the least reactive metals ever so I think there isn't a reaction at all. Probably Pb sticks to Au due to some attractions among the metals.
Can you rub the stain off your gold jewel? If you can, it shows that there is no chemical reaction. If you can't, you probably should break the habit of testing your lipstick on your precious jewels.
2007-04-11 05:49:42 · answer #2 · answered by Blazze 2 · 0⤊ 0⤋
Assuming you live in the civilised world, it's a pretty safe bet that your lipstick doesn't contain lead. We have laws against that sort of thing. Lead doesn't react with gold. In fact, very few things do. I have never heard of this gold-lead thing before. But if it came from the same source that told you your lip-stick has lead in it, it's probably not credible.
2007-04-11 05:43:50 · answer #3 · answered by Ian I 4 · 0⤊ 0⤋
Look at my link
2007-04-11 05:45:20 · answer #4 · answered by maussy 7 · 0⤊ 0⤋