Of the three sciences, physics, chemistry, and biology, the most ...

[Marty]

Of the three sciences, physics, chemistry, and biology, the most complex is ________.
 
  A) physics because it involves many mathematical equations
  B) chemistry because there are so many possible combinations of atoms
  C) biology because it is based upon both the laws of chemistry and physics
  D) All three of these sciences are equally complex

Question 2

Why is it so easy for a magnesium atom to lose two electrons?
 
  A) The nuclear charge of the magnesium atoms is relatively weak.
  B) These two electrons are found relatively far from the nucleus.
  C) These two electrons are well shielded from the nuclear charge.
  D) There are lots of electron-electron repulsions that go on within the valence shell.

[sailorcrescent]

Answer to Question 1

C

Answer to Question 2

C

[Marty]

Excellent

[covalentbond]

Gracias!