41. Heat is a form of:
A) Matter
B) Energy
C) Force
D) Pressure
Answer: B
42. Temperature measures:
A) Heat
B) Average kinetic energy
C) Mass
D) Pressure
Answer: B
43. q = mcΔT is used to calculate:
A) Work
B) Heat
C) Pressure
D) Volume
Answer: B
44. Increasing temperature increases:
A) Energy
B) Pressure
C) Volume
D) All
Answer: D
45. Enthalpy is a:
A) State function
B) Path function
C) Variable
D) Constant
Answer: A
46. Heat is a:
A) State function
B) Path function
C) Constant
D) None
Answer: B
47. Energy change depends on:
A) Initial state only
B) Final state only
C) Initial and final states
D) Path only
Answer: C
48. Hess’s law helps calculate:
A) ΔH
B) ΔT
C) ΔP
D) ΔV
Answer: A
49. Internal energy includes:
A) Kinetic + potential
B) Only kinetic
C) Only potential
D) None
Answer: A
50. Thermochemistry mainly studies:
A) Heat and energy changes
B) Structure
C) Bond angles
D) Color
Answer: A