Intermolecular Attractions
Flashcard
•
Science
•
9th - 12th Grade
•
Medium
Barbara White
Used 3+ times
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14 questions
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1.
FLASHCARD QUESTION
Front
Intermolecular Forces Noun
[in-ter-muh-lek-yuh-ler for-sez]
Back
Intermolecular Forces
The various types of attractions between molecules, which are generally weaker than the ionic or covalent bonds within molecules.
Example: This diagram shows the weak attraction (intermolecular force) between two separate molecules, contrasting it with the strong bond (intramolecular force) within a single molecule.
2.
FLASHCARD QUESTION
Front
Van der Waals Forces Noun
[van der wawlz for-sez]
Back
Van der Waals Forces
The weakest types of intermolecular attractions, which collectively include both dispersion forces and permanent dipole-dipole interactions.
Example: This diagram shows how the random movement of electrons creates a temporary charge imbalance in one atom, which then induces an opposite imbalance in a nearby atom, causing a weak attraction between them.
3.
FLASHCARD QUESTION
Front
Dispersion Forces Noun
[dis-pur-zhun for-sez]
Back
Dispersion Forces
The weakest molecular interactions caused by the random motion of electrons creating temporary, induced dipoles in all molecules.
Example: The image shows how a temporary, uneven spread of electrons in one molecule creates a weak, temporary magnet (dipole) that attracts a neighboring molecule.
4.
FLASHCARD QUESTION
Front
Polarize Verb
[poh-luh-rahyz]
Back
Polarize
To induce a temporary or permanent separation of electric charge in a molecule, creating oppositely charged ends or dipoles.
Example: In a polar molecule like water, electrons are shared unevenly, creating a slightly negative end (pole) and a slightly positive end (pole).
5.
FLASHCARD QUESTION
Front
Temporary Dipole Noun
[tem-puh-rer-ee dahy-pohl]
Back
Temporary Dipole
A momentary, uneven distribution of electron charge in a molecule, creating a brief separation of positive and negative charge.
Example: The random movement of electrons in a molecule creates a temporary, uneven charge (a dipole), which then attracts a neighboring molecule.
6.
FLASHCARD QUESTION
Front
Dipole Interactions Noun
[dahy-pohl in-ter-ak-shunz]
Back
Dipole Interactions
Intermolecular attractions that occur between the oppositely charged regions of adjacent permanent polar molecules.
Example: This diagram shows two polar molecules attracting each other. The partially positive end (δ+) of one molecule is attracted to the partially negative end (δ-) of the other.
7.
FLASHCARD QUESTION
Front
Polar Molecule Noun
[poh-ler mol-i-kyool]
Back
Polar Molecule
A molecule that has permanent partial positive and partial negative ends due to an uneven distribution of bonding electrons.
Example: This diagram shows a water molecule where electrons are shared unevenly, making the oxygen side slightly negative (-) and the hydrogen side slightly positive (+).
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