What is a chemical reaction?
A) when one or more new compounds are formed by rearranging atoms
B) when a new element is formed by rearranging nucleons
C) when two solids mix together to form a heterogeneous mixture
D) when two liquids mix to form a homogeneous mixture
E) when a liquid undergoes a phase change and produces a solid
Question 2
If an ionic bond is stronger than a dipole-dipole interaction, how can water dissolve an ionic compound?
A) The ion-dipole interactions of a bunch of water molecules gang up on the strong ionic bond and pull it into the solution.
B) The ionic bond is weakened by the ion-dipole interactions and ionic repulsion ejects the ions from the crystal.
C) The ion-dipole interaction causes the ions to heat up and vibrate free of the crystal.
D) The ions never overcome their interatomic attraction and therefore are not soluble.
E) none of the above
Reaction coordinate diagram
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Compounds
Compounds
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