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Author Question: Which of the following is a radioactive semimetal? A) Ge B) Pm C) Po D) Rn E) none of the ... (Read 40 times)

kamilo84

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on: Aug 27, 2018
Which of the following is a radioactive semimetal?
 
  A) Ge
  B) Pm
  C) Po
  D) Rn
  E) none of the above

Question 2

What is the term for a modification of a substance that alters its chemical composition?
 
  A) atomic change
  B) chemical change
  C) molecular change
  D) physical change
  E) none of the above


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juwms

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

C

Answer to Question 2

B)


kamilo84

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Reply #2 on: Aug 27, 2018
Both answers were spot on, thank you once again


juwms

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Reply #3 on: Aug 27, 2018
Great! Please up vote :D


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