Chemical Interactions: Intermolecular and Intramolecular Forces

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Questions and Answers

What is the primary factor that affects the strength of London dispersion forces between molecules?

Pressure

Temperature

Mass of the molecules (correct)

Type of molecules (polar/dipole, non-polar)

What is the correct classification of intermolecular forces that exist between different molecules?

Ionic bonds and metallic bonds

Covalent bonds

Intramolecular forces

London dispersion forces, dipole-dipole interaction, and hydrogen bonding (correct)

What is the primary function of intramolecular forces between atoms?

To affect the strength of London dispersion forces

To influence the type of molecules (polar/dipole, non-polar)

To mediate interactions between different molecules

To keep the atoms of the molecule together (correct)

What is the relationship between the distance between molecules and the strength of London dispersion forces?

Inversely correlated Signup and view all the answers

What are the three types of bonds between atoms?

Ionic bonds, covalent bonds, and metallic bonds Signup and view all the answers

What is the primary difference between intermolecular forces and intramolecular forces?

Intermolecular forces exist between different molecules, while intramolecular forces exist between atoms of a molecule Signup and view all the answers

What is the correct classification of electrostatic attraction and repulsion?

Intermolecular forces Signup and view all the answers

What is the primary function of the 'Get the Gist' strategy?

To make effective summary notes for studying Signup and view all the answers

What is the primary function of intermolecular forces?

To mediate the interaction between different molecules Signup and view all the answers

What is the relationship between the mass of molecules and the London Dispersion Force (L.D.F)?

L.D.F is directly proportional to the mass of molecules Signup and view all the answers

What type of intermolecular force occurs between polar molecules?

Dipole-Dipole Interaction Signup and view all the answers

What is the weakest of the intermolecular forces?

London Dispersion Force Signup and view all the answers

What is the purpose of intramolecular forces?

To hold atoms together within a molecule Signup and view all the answers

What is the relationship between the distance between molecules and the London Dispersion Force (L.D.F)?

L.D.F is inversely proportional to the distance between molecules Signup and view all the answers

What is the type of bond that involves the sharing of electrons?

Covalent Bond Signup and view all the answers

What is the cause of Dipole-Dipole Interaction?

The difference in electronegativity of atoms in molecules Signup and view all the answers

Study Notes

Intermolecular and Intramolecular Forces

Factors that affect interactions between molecules of a chemical substance include: • Temperature • Pressure • Type of molecules (polar/dipole, non-polar – ionic, covalent) • Forces (electrostatic attraction and repulsion, van der Waals)

Types of Interactions

Two main types of interactions between atoms and molecules: • Intermolecular forces • Intramolecular forces

Types of Bonds

Three types of bonds between atoms: • Ionic bonds • Covalent bonds • Metallic bonds

Intermolecular Forces

Defined as the forces that mediate interaction between different molecules
Include: • London Dispersion Force (L.D.F) • Dipole-Dipole Interaction • Hydrogen Bonding

London Dispersion Force (L.D.F)

An interaction that exists between all molecules
Weakest of the intermolecular forces
Characteristics: • Inversely correlated to the distance between molecules • Directly proportional to the mass of the molecules • Increases as molecule mass increases

Dipole-Dipole Interaction

Interaction of polar molecules
Atoms that are partially negatively charged attract atoms that are partially positively charged in another molecule
Caused by the difference of electronegativity of the atoms in molecules

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Description

Explore the factors that influence the interactions between molecules of a chemical substance, including temperature, pressure, and molecular type. Identify the two main types of interactions between atoms and molecules.