General chemistry is the study of A. substances that contain ...

[Shelles]

General chemistry is the study of
 
  A. substances that contain the element carbon.
  B. the composition, properties, and reactions of matter.
  C. the physical nature of chemical systems.
  D. substances that do not contain carbon.

Question 2

Alpha decay produces a new nucleus whose ________ than those respectively of the original nucleus.
 
  A) atomic number is 2 less and mass number is 2 less
  B) atomic number is 1 less and mass number is 2 less
  C) atomic number is 2 less and mass number is 4 less
  D) atomic number is 2 more and mass number is 4 more
  E) atomic number is 2 more and mass number is 2 less

[l.stuut]

Answer to Question 1

B

Answer to Question 2

C