ABEKA Chemistry: Precision & Design
Grade 11 - Test 4 Exam with Verified
Detailed Answers
Which contains more energy: 25 g of boiling water at 100⁰C or 25 g
of steam at 100⁰C?
a. 25 g of boiling water at 100⁰C
b. 25 g of steam at 100⁰C
c. Both contain the same amount of energy.
d. The relative amounts of energy cannot be determined from the
information given. -
correct answer ✅b. 25 g of steam 100⁰C
Which of the following statements best explains the fact that the
change in internal energy (∆Ε) equals the difference of the final
value and the initial value?
a. the value of internal energy cannot be measured directly.
b. Internal energy is a state function.
c. ∆Ε approximately equals ∆H for liquids and solids.
d. ∆Ε = Q for a reaction in a bomb calorimeter. -
correct answer ✅b. Internal energy is a state function.
What term refers to the randomness of a substance or system?
a. enthalpy
, ABEKA Chemistry: Precision & Design
Grade 11 - Test 4 Exam with Verified
Detailed Answers
b. heat of fusion
c. endothermy
d. entropy -
correct answer ✅d. entropy
What is the internal energy of a system plus the product of its
pressure and volume?
a. enthalpy
b. heat of fusion
c. endothermy
d. entropy -
correct answer ✅a. enthalpy
Which of the following statements describes what happens when
water at 0⁰C changes to ice at 0⁰C?
a. Heat is absorbed.
b. Heat is released.
c. Heat is neither absorbed nor released.
d. Enthalpy of formation is created. -
correct answer ✅b. Heat is released.
Grade 11 - Test 4 Exam with Verified
Detailed Answers
Which contains more energy: 25 g of boiling water at 100⁰C or 25 g
of steam at 100⁰C?
a. 25 g of boiling water at 100⁰C
b. 25 g of steam at 100⁰C
c. Both contain the same amount of energy.
d. The relative amounts of energy cannot be determined from the
information given. -
correct answer ✅b. 25 g of steam 100⁰C
Which of the following statements best explains the fact that the
change in internal energy (∆Ε) equals the difference of the final
value and the initial value?
a. the value of internal energy cannot be measured directly.
b. Internal energy is a state function.
c. ∆Ε approximately equals ∆H for liquids and solids.
d. ∆Ε = Q for a reaction in a bomb calorimeter. -
correct answer ✅b. Internal energy is a state function.
What term refers to the randomness of a substance or system?
a. enthalpy
, ABEKA Chemistry: Precision & Design
Grade 11 - Test 4 Exam with Verified
Detailed Answers
b. heat of fusion
c. endothermy
d. entropy -
correct answer ✅d. entropy
What is the internal energy of a system plus the product of its
pressure and volume?
a. enthalpy
b. heat of fusion
c. endothermy
d. entropy -
correct answer ✅a. enthalpy
Which of the following statements describes what happens when
water at 0⁰C changes to ice at 0⁰C?
a. Heat is absorbed.
b. Heat is released.
c. Heat is neither absorbed nor released.
d. Enthalpy of formation is created. -
correct answer ✅b. Heat is released.
