PHYSICAL CHEMISTRY EXAMINATION QUESTIONS AND CORRECT ANSWER WITH EXPLANATION GRADED A+ STUDY GUIDE

PHYSICAL CHEMISTRY EXAMINATION QUESTIONS AND
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Physical chemistry is the study of:
A. Physical properties and behavior of matter
B. Living organisms
C. Rocks only
D. Genetics
Answer: A
Rationale: It deals with how matter behaves and energy changes.

2. The three main branches of physical chemistry are:
A. Thermodynamics, kinetics, quantum chemistry
B. Biology, geology, zoology
C. Organic, inorganic, analytical
D. Physics, math, biology
Answer: A
Rationale: Core theoretical areas of physical chemistry.

3. Thermodynamics studies:
A. Energy changes
B. Cell structure
C. DNA only
D. Metals only
Answer: A
Rationale: Heat and energy transformations.

4. System in thermodynamics is:
A. Part of the universe under study
B. Entire universe
C. Random object
D. Gas only
Answer: A
Rationale: Defined portion being analyzed.

5. Surroundings are:
A. Everything outside the system

, B. Only gases
C. Only liquids
D. Only solids
Answer: A
Rationale: External environment.

6. Open system exchanges:
A. Matter and energy
B. Only energy
C. Only matter
D. No exchange
Answer: A
Rationale: Both mass and energy transfer.

7. Closed system exchanges:
A. Energy only
B. Matter only
C. No energy
D. No interaction
Answer: A
Rationale: No mass exchange.

8. Isolated system exchanges:
A. Neither matter nor energy
B. Only matter
C. Only energy
D. Both matter and energy
Answer: A
Rationale: Fully isolated system.

9. First law of thermodynamics is:
A. Energy conservation
B. Mass creation
C. Heat destruction
D. Pressure law
Answer: A
Rationale: Energy cannot be created or destroyed.

10. Internal energy is:
A. Total energy of a system

, B. Only kinetic energy
C. Only potential energy
D. External energy
Answer: A
Rationale: Sum of all molecular energies.

11. Enthalpy is:
A. Heat content at constant pressure
B. Temperature only
C. Volume only
D. Mass only
Answer: A
Rationale: Heat exchange in reactions.

12. Entropy measures:
A. Disorder
B. Mass
C. Volume
D. Pressure
Answer: A
Rationale: Degree of randomness.

13. Gibbs free energy predicts:
A. Reaction spontaneity
B. Color change
C. Mass change
D. Shape change
Answer: A
Rationale: Whether reaction occurs spontaneously.

14. Spontaneous reaction:
A. Occurs naturally
B. Requires continuous energy
C. Never occurs
D. Stops immediately
Answer: A
Rationale: No external energy needed.

15. Endothermic reaction:
A. Absorbs heat