Chemistry Gases DUHS 2022
PMDC Verified Question 39 of 65
The kinetic molecular theory of gases explains:
A
Mass number
B
Atoms number
C
The behavior of gases
D
Electron
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: The behavior of gases
Concept:

The Kinetic Molecular Theory (KMT) is a classical physics model designed to explain the macroscopic properties of gases through the microscopic motion of their individual particles.

Solution:

  • The postulates of the KMT (random motion, elastic collisions, negligible volume, no intermolecular forces) form the theoretical foundation that explains macroscopic gas laws like Boyle's, Charles's, and Avogadro's laws.


  • Therefore, the explicit purpose of this theory is to explain the physical behavior of gases under various conditions of pressure, volume, and temperature.


Why other options are incorrect:

  • Options A & B: Mass number and atomic number are fundamental properties of atomic nuclei, explained by atomic theory, not KMT.
  • Option D: Electrons and their orbitals belong to quantum mechanics and atomic structure theories.

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