U.4 INTERMOLECULAR FORCES Flashcards
How is name the pass from solid to liquid? it absords or expulse energy?
Fusión, absorbs E
How is name the pass from solid to gas? it absords or expulse energy?
Sublimination, absorbs E
How is name the pass from gas to liquid? it absords or expulse energy?
Condensation, expulse E
How is name the pass from gas to solid? it absords or expulse energy?
Deposition, expulse E
How is name the pass from liquid to gas? it absords or expulse energy?
Vaporization, absobs E
How is name the pass from liquid to solid? it absords or expulse energy?
Solidification, expulse E
Intermolecular forces have low or high E?
Low E
What are the types of intermolecular forces?
- Van der waals forces
- Hydrogen bonding
What are the types of Van Der Waals forces?
- Dipole-dipole forces
- Dipole- induce dipole forces (London dispersion forces)
Dipole-dipole forces are electrostatic interacction between..
2 polar molecules
At more dipole moment…
more dipole-dipole force
The effect of dipole-dipole forces is added to…
The effect of London dispersion forces.
The dipole-induce dipole forces are electrostatic interactions between a…
a polar molecule and a non-polar molecule with a induce dipole(can happend to all molecules)
The london dispersion forces increase with the….
molecular heigh
Which atoms at bonding with H create a especial kind of dipole?
N, O, F
The hydrogen bonding is a…
special type of dipole-dipole interaction, between H and a highly electronegative atom.
The intensity of london dispersión forces is determine for how…
easy is to break the induce dipole
How is name the easiness in which the e- distributeion on a molecule can be distorted?
Polarizability
At larger molecule…
larger polarizability
At more london dispersión forces….
more polarizability
At higher boiling points…
more intermolecular forces
How do we know which substance the intermolecular forces are stronger?
- When substances with very different molecular weights are compared, London dispersion forces will be more important than dipole-dipole forces.
- When substances with similar molecular weights are compared, dipole-dipole forces will add up to the London dispersion forces, increasing the boiling and melting points.
- If hydrogen bonds are present, they are more important than the dipole-dipole forces.
In what types de solids clasificate?
- AMORPHOUS SOLIDS
- CRUSTALLINE SOLIDS
The amorphous solids are solids in which its particles….
do not have an order structure
