When water freezes, its density A) decreases. B) remains the ...

[lindiwe]

When water freezes, its density
 
  A) decreases.
  B) remains the same as in the liquid state.
  C) increases.
  D) decreases until -4 C, then increases.
  E) is indeterminant due to hydrogen bonding.

Question 2

The phase changes water and other substances undergo are based on
 
  A) diabatic forces acting on the molecules.
  B) gravitational energy stored within the electron orbitals of atoms.
  C) nuclear fusion processes between atoms of a substance.
  D) nuclear fission processes between atoms of a substance.
  E) the amount of motion of molecules and the strength of the bonds between them.

[coyin]

Answer to Question 1

A

Answer to Question 2

E