HONORS CHEMISTRY PRACTICE TEST FINAL 1
CERTIFICATION EVALUATION 2026 FULL
QUESTIONS AND CORRECT ANSWERS
◉ 2. According to the Lewis definition, an acid is a species
(A) having a hydrogen ion. (B) donating a pair of electrons.
(C) accepting a pair of electrons. (D) accepting a hydrogen ion.
Answer: (C) accepting a pair of electrons
◉ 3. All are potential Lewis bases except
(A) NH3 (B) H2O (C) CH4 (D) CN-
Answer: (C) CH4
◉ 4. Which hydrated metal ion is most acidic under conditions of
equal molar concentration in water?
(A) Al3+ (B) Ba2+ (C) K+ (D) Zn2+ (E) Ag+
Answer: (A) Al3+
◉ 5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P (C) As (D) Sb (E) Bi
Answer: (E) Bi
,◉ Atomic Structure:
6. In what respect does an atom of magnesium differ from a
magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater
than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl2.
(E)The ion has two more planetary electrons than the atom.
Answer: (A)The ion has a more stable electronic arrangement than
the atom.
◉ 7. A certain atom has the symbol 148
73Px. What does this symbol tell about an atom of the element?
(A) It has 148 electrons. (B) It has a valence of 4.
(C) It has 221 protons in the nucleus. (D) It has 75 neutrons in the
nucleus.
(E) Its atomic mass is 73 u.
Answer: (D) It has 75 neutrons in the nucleus.
◉ 8. The atomic mass of an element is 32.07 u and its atomic
number is 16. The number of protons
,contained in the nucleus of an atom of this element is
(A) 16 (B) 31 (C) 32 (D) 48
Answer: (A) 16
◉ 9. The atomic mass of an element is 32.07 u and its atomic
number is 16. The element forms a simple
ion. The ion will most likely have a charge of
(A)1- (B) 2- (C) 3+ (D) 1+
Answer: (B) 2-
◉ 10. The nucleus of which atom contains seven neutrons?
Atom A n = 1 n = 2 n = 3
M = 24,Z = 12 2e - 8e - 2e -
Atom B n = 1 n = 2 n = 3
M = 15,Z = 7 2e - 5e -
Atom C n = 1 n = 2 n = 3
M = 17,Z = 10 2e - 8e -
Atom D n = 1 n = 2 n = 3
M = 7, Z = 3 2 e - 1 e -
, Atom E n = 1 n = 2 n = 3
M = 34,Z = 17 2e - 8e - 7e -
(A) A (B) B (C) C (D) D (E) E
Answer: (C) C,
Atom C n = 1 n = 2 n = 3
M = 17,Z = 10 2e - 8e -
◉ Bonding:
11. In which pair of compounds should the first member be more
covalent than the second member?
(A) TlCl, TlCl3 (B) SnI4, SnF4 (C) LiF, BF3 (D) SnF4, CF4
Answer: (B) SnI4, SnF4
◉ 12. Which is the most complete and best description of a covalent
bond?
(A)a system of two nuclei with a pair of electrons located exactly
midway between both nuclei
(B)the attractive force between two atoms of opposite charge
(C)a donor bond in which one atom donates an unshared pair to the
other
CERTIFICATION EVALUATION 2026 FULL
QUESTIONS AND CORRECT ANSWERS
◉ 2. According to the Lewis definition, an acid is a species
(A) having a hydrogen ion. (B) donating a pair of electrons.
(C) accepting a pair of electrons. (D) accepting a hydrogen ion.
Answer: (C) accepting a pair of electrons
◉ 3. All are potential Lewis bases except
(A) NH3 (B) H2O (C) CH4 (D) CN-
Answer: (C) CH4
◉ 4. Which hydrated metal ion is most acidic under conditions of
equal molar concentration in water?
(A) Al3+ (B) Ba2+ (C) K+ (D) Zn2+ (E) Ag+
Answer: (A) Al3+
◉ 5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P (C) As (D) Sb (E) Bi
Answer: (E) Bi
,◉ Atomic Structure:
6. In what respect does an atom of magnesium differ from a
magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater
than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl2.
(E)The ion has two more planetary electrons than the atom.
Answer: (A)The ion has a more stable electronic arrangement than
the atom.
◉ 7. A certain atom has the symbol 148
73Px. What does this symbol tell about an atom of the element?
(A) It has 148 electrons. (B) It has a valence of 4.
(C) It has 221 protons in the nucleus. (D) It has 75 neutrons in the
nucleus.
(E) Its atomic mass is 73 u.
Answer: (D) It has 75 neutrons in the nucleus.
◉ 8. The atomic mass of an element is 32.07 u and its atomic
number is 16. The number of protons
,contained in the nucleus of an atom of this element is
(A) 16 (B) 31 (C) 32 (D) 48
Answer: (A) 16
◉ 9. The atomic mass of an element is 32.07 u and its atomic
number is 16. The element forms a simple
ion. The ion will most likely have a charge of
(A)1- (B) 2- (C) 3+ (D) 1+
Answer: (B) 2-
◉ 10. The nucleus of which atom contains seven neutrons?
Atom A n = 1 n = 2 n = 3
M = 24,Z = 12 2e - 8e - 2e -
Atom B n = 1 n = 2 n = 3
M = 15,Z = 7 2e - 5e -
Atom C n = 1 n = 2 n = 3
M = 17,Z = 10 2e - 8e -
Atom D n = 1 n = 2 n = 3
M = 7, Z = 3 2 e - 1 e -
, Atom E n = 1 n = 2 n = 3
M = 34,Z = 17 2e - 8e - 7e -
(A) A (B) B (C) C (D) D (E) E
Answer: (C) C,
Atom C n = 1 n = 2 n = 3
M = 17,Z = 10 2e - 8e -
◉ Bonding:
11. In which pair of compounds should the first member be more
covalent than the second member?
(A) TlCl, TlCl3 (B) SnI4, SnF4 (C) LiF, BF3 (D) SnF4, CF4
Answer: (B) SnI4, SnF4
◉ 12. Which is the most complete and best description of a covalent
bond?
(A)a system of two nuclei with a pair of electrons located exactly
midway between both nuclei
(B)the attractive force between two atoms of opposite charge
(C)a donor bond in which one atom donates an unshared pair to the
other
