A great deal of heat is released when liquid water freezes. Why ...

[futuristic]

A great deal of heat is released when liquid water freezes. Why doesn't this heat simply remelt the ice?
 
  A) Once the water is in crystalline formation, it takes even more energy to melt it.
  B) This heat is radiated outwards to the environment, rather than back into the ice.
  C) The heat is not concentrated enough to melt ice.
  D) There is not enough energy in the heat to melt ice.

Question 2

Which of the following substances is pure?
 
  A) an ionic compound consisting of sodium and chlorine ions
  B) a covalent compound consisting of one type of molecule
  C) an element
  D) all of the above
  E) none of the above

[kaykay69]

Answer to Question 1

B

Answer to Question 2

D

[futuristic]

Thanks for the timely response, appreciate it

[daiying98]

Wow, this really help