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Originally Posted by jensmusic
When you melt down gold and after it is melted doesn't it become pure gold? By melting the gold it burns up all the impurities in it, right? Like for instance, if you melt down different types of karats of gold into one melting pot then doesn't it all merge together burning out the all the impurities that each gold piece had making it one pure gold piece? I don't know, just asking so I do know.  |
Most of the impurities do not just burn away - they are other metals and materials mixed in. Gold is very very heavy, so when melted, it stays at the bottom, and you can scrape away the top layer of other stuff. It takes multiple attempts to get gold to a high level of purity.