D425 SCIE 2030 Introduction to
Chemistry
Final Assessment Review
(Questions & Solutions)
2025
1
, 1. Multiple Choice
Question:
Which atomic property generally increases from left to right across a
period in the periodic table?
Options:
A. Atomic radius
B. Ionization energy
C. Electronegativity
D. Both B and C
Correct ANS: D. Both ionization energy and electronegativity
Rationale:
As you move from left to right across a period, the effective nuclear
charge increases. Consequently, electrons are held more tightly, thereby
increasing both the ionization energy and the electronegativity. This
concept is vital in understanding how atoms interact in various chemical
and biological systems.
---
2. Fill-in-the-Blank
Question:
The ________ is the energy required to remove an electron from an
atom in its gaseous state.
Correct ANS:
Ionization energy
Rationale:
Ionization energy is a foundational concept in atomic structure and helps
2
, in predicting how atoms participate in chemical reactions, which is
particularly relevant when considering the reactivity of ions in
physiological processes.
---
3. True/False
Question:
The strength of an ionic bond is solely determined by the difference in
electronegativity between the two atoms.
Correct ANS:
False
Rationale:
While the difference in electronegativity is an important factor, the
overall strength of an ionic bond also depends on additional factors such
as the lattice energy of the ionic compound and the sizes of the ions
involved. This understanding is crucial when considering how electrolytes
behave in aqueous solutions, impacting drug formulations and patient
care.
---
4. Multiple Response
Question:
Which of the following factors influence the solubility of ionic
compounds in water? (Select all that apply)
Options:
A. Lattice energy
B. Hydration energy
C. Pressure changes
D. Polarity of water molecules
Correct ANSs:
3
Chemistry
Final Assessment Review
(Questions & Solutions)
2025
1
, 1. Multiple Choice
Question:
Which atomic property generally increases from left to right across a
period in the periodic table?
Options:
A. Atomic radius
B. Ionization energy
C. Electronegativity
D. Both B and C
Correct ANS: D. Both ionization energy and electronegativity
Rationale:
As you move from left to right across a period, the effective nuclear
charge increases. Consequently, electrons are held more tightly, thereby
increasing both the ionization energy and the electronegativity. This
concept is vital in understanding how atoms interact in various chemical
and biological systems.
---
2. Fill-in-the-Blank
Question:
The ________ is the energy required to remove an electron from an
atom in its gaseous state.
Correct ANS:
Ionization energy
Rationale:
Ionization energy is a foundational concept in atomic structure and helps
2
, in predicting how atoms participate in chemical reactions, which is
particularly relevant when considering the reactivity of ions in
physiological processes.
---
3. True/False
Question:
The strength of an ionic bond is solely determined by the difference in
electronegativity between the two atoms.
Correct ANS:
False
Rationale:
While the difference in electronegativity is an important factor, the
overall strength of an ionic bond also depends on additional factors such
as the lattice energy of the ionic compound and the sizes of the ions
involved. This understanding is crucial when considering how electrolytes
behave in aqueous solutions, impacting drug formulations and patient
care.
---
4. Multiple Response
Question:
Which of the following factors influence the solubility of ionic
compounds in water? (Select all that apply)
Options:
A. Lattice energy
B. Hydration energy
C. Pressure changes
D. Polarity of water molecules
Correct ANSs:
3
