,CHEM 103 Module 5 | Practice Q&A | 2026/2027 | Chemistry |
Portage Learning | 100%
1. What type of bond forms between two oppositely charged ions?
A) Covalent bond
B) Polar covalent bond
C) Ionic bond
D) Metallic bond
Correct Answer: Ionic bond
Rationale: An ionic bond is formed by the electrostatic attraction between
two oppositely charged ions, such as Na⁺ and Cl⁻. This typically occurs
between a metal and a nonmetal, where electrons are transferred from the
metal to the nonmetal.
2. Metals tend to ______ electrons when forming chemical bonds.
A) Share
B) Gain
C) Lose
D) Neither gain nor lose
Correct Answer: Lose
Rationale: Metals tend to lose electrons when forming chemical bonds,
resulting in positively charged cations. Nonmetals tend to gain electrons,
forming anions. This electron transfer is the basis of ionic bonding.
3. Nonmetals tend to ______ electrons when forming chemical bonds.
A) Share
,B) Gain
C) Lose
D) Neither gain nor lose
Correct Answer: Gain
Rationale: Nonmetals tend to gain electrons when forming chemical bonds,
resulting in negatively charged anions. This is because nonmetals have high
electronegativity and readily accept electrons to achieve a stable octet
configuration.
4. An ionic bond forms when the electronegativity difference between atoms
is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
D) Exactly 0
Correct Answer: Greater than 1.6
Rationale: An ionic bond forms when the electronegativity difference is
greater than 1.6. This indicates a complete transfer of electrons from the less
electronegative atom to the more electronegative atom.
5. A polar covalent bond forms when the electronegativity difference
between atoms is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
, D) Exactly 0
Correct Answer: Between 0.5 and 1.6
Rationale: A polar covalent bond forms when the electronegativity difference
is between 0.5 and 1.6. In this range, electrons are shared unequally,
creating a dipole with partial positive and negative charges.
6. A nonpolar covalent bond forms when the electronegativity difference
between atoms is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
D) Exactly 0
Correct Answer: Less than 0.5
Rationale: A nonpolar covalent bond forms when the electronegativity
difference is less than 0.5. Electrons are shared equally between atoms of
similar electronegativity, such as in H₂ or Cl₂.
7. Which of the following pairs of elements would most likely form an ionic
bond?
A) H and O
B) Na and Cl
C) C and O
D) N and O
Correct Answer: Na and Cl
Portage Learning | 100%
1. What type of bond forms between two oppositely charged ions?
A) Covalent bond
B) Polar covalent bond
C) Ionic bond
D) Metallic bond
Correct Answer: Ionic bond
Rationale: An ionic bond is formed by the electrostatic attraction between
two oppositely charged ions, such as Na⁺ and Cl⁻. This typically occurs
between a metal and a nonmetal, where electrons are transferred from the
metal to the nonmetal.
2. Metals tend to ______ electrons when forming chemical bonds.
A) Share
B) Gain
C) Lose
D) Neither gain nor lose
Correct Answer: Lose
Rationale: Metals tend to lose electrons when forming chemical bonds,
resulting in positively charged cations. Nonmetals tend to gain electrons,
forming anions. This electron transfer is the basis of ionic bonding.
3. Nonmetals tend to ______ electrons when forming chemical bonds.
A) Share
,B) Gain
C) Lose
D) Neither gain nor lose
Correct Answer: Gain
Rationale: Nonmetals tend to gain electrons when forming chemical bonds,
resulting in negatively charged anions. This is because nonmetals have high
electronegativity and readily accept electrons to achieve a stable octet
configuration.
4. An ionic bond forms when the electronegativity difference between atoms
is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
D) Exactly 0
Correct Answer: Greater than 1.6
Rationale: An ionic bond forms when the electronegativity difference is
greater than 1.6. This indicates a complete transfer of electrons from the less
electronegative atom to the more electronegative atom.
5. A polar covalent bond forms when the electronegativity difference
between atoms is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
, D) Exactly 0
Correct Answer: Between 0.5 and 1.6
Rationale: A polar covalent bond forms when the electronegativity difference
is between 0.5 and 1.6. In this range, electrons are shared unequally,
creating a dipole with partial positive and negative charges.
6. A nonpolar covalent bond forms when the electronegativity difference
between atoms is:
A) Less than 0.5
B) Between 0.5 and 1.6
C) Greater than 1.6
D) Exactly 0
Correct Answer: Less than 0.5
Rationale: A nonpolar covalent bond forms when the electronegativity
difference is less than 0.5. Electrons are shared equally between atoms of
similar electronegativity, such as in H₂ or Cl₂.
7. Which of the following pairs of elements would most likely form an ionic
bond?
A) H and O
B) Na and Cl
C) C and O
D) N and O
Correct Answer: Na and Cl
