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ECAT - Practice Test - Chemistry - Energetics Quiz

Attempt 10 MCQs on ECAT - Practice Test - Chemistry - Energetics | Quiz 1

1. What is enthalpy?



2. What is the sign of ΔH for an exothermic reaction?



3. What is the sign of ΔH for an endothermic reaction?



4. What is the standard enthalpy of formation?



5. What is the standard state of an element?



6. What is the standard enthalpy of formation of an element in its standard state?



7. What does Hess's law state?



8. Why is Hess's law useful?



9. How is enthalpy change calculated from bond energies?



10. Is bond breaking endothermic or exothermic?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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