AP Chemistry Practice
Exam Questions And
Correct Answers
(Verified Answers)
Plus Rationales
2025/2026 Q&A |
Instant Download Pdf
1. What is the primary subatomic particle responsible for
chemical bonding?
A. Neutron
B. Electron
C. Proton
D. Positron
Electrons participate in sharing and transfer during chemical
bonding.
,2. Which law states that mass is neither created nor
destroyed in a chemical reaction?
A. Dalton’s Law
B. Law of Conservation of Mass
C. Avogadro’s Law
D. Hess’s Law
Total mass remains constant in all chemical processes.
3. What is the molar mass of CO₂?
A. 28 g/mol
B. 30 g/mol
C. 44 g/mol
D. 46 g/mol
12 + (16×2) = 44 g/mol.
4. Which element has the highest electronegativity?
A. Oxygen
B. Nitrogen
C. Carbon
D. Fluorine
Fluorine is the most electronegative element on the periodic
table.
5. What type of bond forms between Na and Cl?
, A. Covalent
B. Ionic
C. Metallic
D. Hydrogen
Electron transfer occurs between metal and nonmetal.
6. Which gas law relates pressure and volume at constant
temperature?
A. Charles’s Law
B. Boyle’s Law
C. Avogadro’s Law
D. Dalton’s Law
P₁V₁ = P₂V₂.
7. What is the pH of a neutral solution at 25°C?
A. 0
B. 7.5
C. 7
D. 14
Neutral water has equal H⁺ and OH⁻ concentrations.
8. Which is a strong acid?
A. CH₃COOH
B. HCl
C. NH₃
Exam Questions And
Correct Answers
(Verified Answers)
Plus Rationales
2025/2026 Q&A |
Instant Download Pdf
1. What is the primary subatomic particle responsible for
chemical bonding?
A. Neutron
B. Electron
C. Proton
D. Positron
Electrons participate in sharing and transfer during chemical
bonding.
,2. Which law states that mass is neither created nor
destroyed in a chemical reaction?
A. Dalton’s Law
B. Law of Conservation of Mass
C. Avogadro’s Law
D. Hess’s Law
Total mass remains constant in all chemical processes.
3. What is the molar mass of CO₂?
A. 28 g/mol
B. 30 g/mol
C. 44 g/mol
D. 46 g/mol
12 + (16×2) = 44 g/mol.
4. Which element has the highest electronegativity?
A. Oxygen
B. Nitrogen
C. Carbon
D. Fluorine
Fluorine is the most electronegative element on the periodic
table.
5. What type of bond forms between Na and Cl?
, A. Covalent
B. Ionic
C. Metallic
D. Hydrogen
Electron transfer occurs between metal and nonmetal.
6. Which gas law relates pressure and volume at constant
temperature?
A. Charles’s Law
B. Boyle’s Law
C. Avogadro’s Law
D. Dalton’s Law
P₁V₁ = P₂V₂.
7. What is the pH of a neutral solution at 25°C?
A. 0
B. 7.5
C. 7
D. 14
Neutral water has equal H⁺ and OH⁻ concentrations.
8. Which is a strong acid?
A. CH₃COOH
B. HCl
C. NH₃
