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Author Question: Probably the first metal to be freed from its ore by smelting was A) aluminum. B) copper. C) ... (Read 91 times)

clippers!

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on: Aug 27, 2018
Probably the first metal to be freed from its ore by smelting was
 
  A) aluminum.
  B) copper.
  C) lead.
  D) iron.

Question 2

The black tarnish on silver is
 
  A) AgOH.
  B) Ag2O.
  C) AgCl.
  D) Ag2S.


canderson530

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

D


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