Intermolecular forces and Forensic Science Flashcards
What does the type of intermolecular force determine?
the strength of the attraction between molecules
Dipole-dipole
The second strongest intermolecular forces
Which has the weakest intermolecular forces?
Dispersion forces
Volatility
a measure of the ability of a substance to evaporate
Evaporation
occurs when the vapor moves away from the surface as a liquid
Which substance will evaporate more quickly, water or acetone?
water has high intermolecular forces so it takes lots more time to evaporate than a nonpolar substance, such as acetone, which has very high volatiltiy
What does polarity cause?
causes the molecule to be attracted to anything else with a charge
What creates the forces within a molecule?
The polarity of a molecule
Surfactant
a substance that tends to reduce the surface tension of a liquid in which it is dissolved.
Visible light
a form of radiant energy defined by the wavelength at which it travels through space
Light is…
radiant energy
Higher frequency=
more energy
Higher energy=
shorter wavelength
when two or more atoms join together by sharing their outermost electrons…
a molecular compound is formed
