Total Potential Energy Quick Check Quizes and Answers.

Total Potential Energy Quick Check
Quizes and Answers.
The chemical potential energy of bond A is greater than the chemical potential energy of bond
B. Which statement best explains this observation? - Answer The atoms in bond A are held
more tightly together than the atoms in bond B.



Which statement about the bond energies of nitrogen, iodine, and fluorine gases is correct? -
Answer The bond in nitrogen gas is the most difficult to break.



Use the information in the table to answer the question.

Bond. Bond Energy (kJ/mol)

C-H 413

H-O 459

C-Cl 327

N-H 391

Which molecule has the greatest bond energy? - Answer CH4



The balanced equations for two reactions are shown.

(1) CH4 + N2 + H2 → CH3N + NH3

(2) CH4 + I2 → CH3I + HI

Which statement best explains why reaction 1 requires a greater input of energy than reaction
2? - Answer The bond energy of the reactants in reaction 1 is greater than the bond energy
of the reactants in reaction 2.



Chlorine and bromine are in the same group in the periodic table. The bond energy of a Cl-Cl
bond is 240 kJ/mol. The bond energy of a Br-Br bond is 190 kJ/mol. Which statement best
explains this difference? - Answer Bromine has more electron levels than chlorine.