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Why were metals such as copper and gold discovered long before gases such as oxygen and nitrogen?
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Why were metals such as copper and gold discovered long before gases such as oxygen and nitrogen?

User Anzhela
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Probably because we can see and touch gold and copper. We can touch oxygen and nitrogen, but you can't really tell the difference between them and other gasses. Also, if you go way back, scientists used to think air was all just one element.
User Aychedee
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