Kinetic Molecular Theory Postulates Quiz

Kinetic Energy and Temperature

• Energy in motion of particles is referred to as kinetic energy in Kinetic Molecular Theory (KMT).
• The kinetic energy of particles is directly related to the substance’s temperature; as temperature increases, the average kinetic energy of particles increases.

Space Between Particles

• One postulate of KMT emphasizes that particles in matter are separated by significant space, which affects their movement and behavior.

Intermolecular vs Intramolecular Forces

• Intermolecular forces act between separate molecules, while intramolecular forces occur within a single molecule, holding atoms together.
• Intramolecular forces are typically much stronger than intermolecular forces.

Forces Determining State of Matter

• According to KMT, the state of matter and physical properties like the melting point are determined by the balance of intermolecular forces acting between particles.

Types of Bonds and Forces

• Covalent bonds are categorized as intramolecular forces; they hold atoms together within a molecule.
• Attractive forces between particles are generally referred to as intermolecular forces in KMT.

Strength of Forces

• Intramolecular forces are stronger than intermolecular forces, influencing a substance's stability and chemical behavior.

Chemical Behavior Determinants

• The chemical behavior of a substance is determined by the arrangement and strength of its intramolecular forces, as outlined in KMT.