Author Question: Probably the first metal to be freed from its ore by smelting was A) aluminum. B) copper. C) ... (Read 42 times)

clippers!

  • Hero Member
  • *****
  • Posts: 828
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

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

B

Answer to Question 2

D



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

For a complete list of videos, visit our video library