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Author Question: Identify the number of valence electrons for Mg. A) 8 B) 7 C) 5 D) ... (Read 182 times)

robinn137

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on: Aug 27, 2018
Identify the number of valence electrons for Mg.
 
  A) 8
  B) 7
  C) 5
  D) 2

Question 2

What is the difference between a physical property and a chemical property? Give an example of each.
 
  What will be an ideal response?


Sweetkitty24130

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

D

Answer to Question 2

A physical property is one that a substance displays without changing its composition, whereas a chemical property is one that a substance displays only by changing its composition via a chemical change. Physical properties include color, appearance, melting point, boiling point, and density. Chemical properties include corrosiveness, flammability, acidity, and toxicity.


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robinn137

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Reply #2 on: Aug 27, 2018
Thanks


Sweetkitty24130

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Reply #3 on: Aug 27, 2018
Welcome :)


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