Chem 1100 exam 4
Water
highly polar, less dense in frozen states but higher volume due to hexagonal structures.
Charles' Law
heating a room on a cold day
Boyle's Law
Scuba diving
Dispersion Forces?
the weakest of all molecular interactions, are caused by the motion of electrons
dipole-dipole forces
intermolecular forces that exist between polar molecules. Active only when the
molecules are close together. The strengths of intermolecular attractions increase when
polarity increases
hydrogen bonding
the intermolecular force in which a hydrogen atom that is bonded to a highly
electronegative atom is attracted to an unshared pair of electrons of an electronegative
atom in a nearby molecule HONF
Major component of a solution?
solvent
minor component of a solution?
solute
higher molecular weight
higher boiling point
soap is
polar and nonpolar at different ends, this allows it to work with polar water and nonpolar
grease
how to tell if a molecule is polar
1. polar bonds
2. not symmetrical
high vapor pressure
weak intermolecular forces - volatile - acetone
low vapor pressure
strong intermolecular forces - unvolatile - water
hard water
Water that has certain dissolved ions in it - predominately calcium and magnesium ions
What do acids release?
Hydrogen ions (H+)
properties of acids
All acids contain hydrogen ,Taste sour, corrosive
HCl