important chem for unit 3

real gases have less pressure than predicted bc real gases have?

IMF’s

real gases have more pressure than predicted bc real gases have?

their own(individual) volume

behavior of ideal gas particles

individual molecules have no volume

gases have no IMF’s

their in constant motion & move in straight lines

pressure = # of what?

collisions with side of container

temp is avg what?

average kinetic energy

particles w same vol same KE(or same temp) will

particle w more moles will have more pressure

KE = 1/2MV²

m = mass in kg

v = velocity

substitutional alloy

similar size

interstitial alloys

different in size

network atoms

super high melting point

covalent bonding

no conductivity

not soluble

not malleable

less vapor is ___ IMF’s

strong

more vapor is ____ IMFs

weaker IMF’s

solid to liquid

overcoming IMF’s by absorbing energy

liquid to solid

release of energy

increase temp = ?

increase KE = increase vapor = increase vapor pressure

what is boiling point

when vapor pressure = atm pressure

when ionic compound is solid it _______ conduct

when it is molten or in solution it _______ conduct

does not

does (ions are able to flow)

MP. VP. and BP all deal with ____ forces

intermolecular

in max-boltzmann dist. higher temps = _____ spread

and what is the peak

more spread out distribution

peak is the avg temp (avg. energy required for molecules to escape)

empirical

most reduced (if one ends up in decimal multiply to get to least whole number)

molecular

true (use mm of empirical and divide to get true ratio)

ionic properities

• high melting point

• ionic bond broken when it melts

• only conductive when molten or in solution

• is soluble

• brittle

covalent properties

• low melting point

• weak IMF’s (weakend/broken when melts)

• not conductive

• soluble if polar not if nonpolar

• not malleable

metallic properties

• very high melting point

• metallic bonding (weakened/broken when melted)

• very conductive

• not soluble

• malleable

covalent network 3d vs 2d

2d has weak IMF bonds btwn layers

both have very high mp, made of atoms, not conductive, not soluble or malleable

ex. carbon, SiO2 , BN

experimental mm

mass/moles

1. Find Mass of Butane Lost: Initial mass - Final mass

2. Convert Volume to Liters:

3. Convert Temp to Kelvin:

4. Find Pressure of Dry Butane: P(total) = P(water) + P(butane)

5. Calculate Moles n = pv/RT

6. Calculate Experimental Molar Mass:

7. Calculate Theoretical Molar Mass

8. Calculate Percent Error