Chemistry concepts to remember heh

Polar covalent

lewis structure is not the same

Nonpolar covalent

lewis structure is the same

Ionic solid

the compound is highly polar meaning the electroneagtivty is large or directly bonded to F O or N

Hydrogen bond to

F,O,N

Order of intermolecular forces

Greatest to Lowest

• Ionic

• hydrogen

• dipole-dipole

• dispersion

Dispersion

more of random nonpolar covalent

Dipole dipole

polar

Molecular solid

usualyl low melting point

Ionic solid

usually high mp

Covalent newtowkr solid

extremely high meltong point

metallic splod

moderate to high and both metals

Mass percentage

Mass of the compound/mass over the whole compound (100%)

Mole fraction

moles of solute/total moles

Molality

moles of solute/kg of solvent

Molarity(M)

moles of solute/liters of solution.

Rate Law

• look at the chart and which ones are needed

formula:

rate/(MxM)

First order reaction

• does not depend on the intital concentration or partial pressure

When the Kp for decomposition for one part is small,

the equallibrium partisl pressure will stay the same

IF the reaction is endothermic

adding heat will shift it to the right

If gas is added to equillbirum the oversll gas

will stay the same

More poalrizable

higher molecule weight

More polar

higher diff in EN

Q>K

equillibrium shifts left