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ap chem > Unit 3 Test > Flashcards

Unit 3 Test Flashcards

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1
Q

greater mass means

A

greater LDF strength

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2
Q

what is the order of IMFs from weakest to strongest

A

LDF
dipole
H-bonding

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3
Q

which IMF is polar only

A

dipole

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4
Q

which IMF is nonpolar only

A

H-bonding

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5
Q

what constitues an ideal gas

A

at the same temp, an ideal gas has the least possible IMF attraction and the smallest possible mass

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6
Q

what happens on either side in 1:1 ratios

A

the same amount that goes in also comes out

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7
Q

what is the shortest bond

A

triple bond

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8
Q

how to find the pressure if given total and vapor pressure

A

total-vapor=pressure

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9
Q

what does the boltzmann distribution curve tell you

A

which molecule has the greatest mass, and in turn, the smallest speed

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10
Q

how to find partial pressure

A

number of moles times the total pressure

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11
Q

at the same temp, the molecule with the greater mass has what speed

A

more particles with the least speed

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11
Q

how to determine nonpolar

A

symmetrical or has less than a 0.4 difference in electronegativity

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12
Q

limiting reactant

A

the one that runs out and there is not enough to bond with the rest of the molecules

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13
Q

how to determine polar

A

non-symmetrical lewis dot or has greater than a 0.4 difference in electronegativity

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14
Q

is CH always nonpolar or polar

A

nonpolar

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15
Q

how do IMFs affect boiling points

A

the stronger the IMF, the higher the boiling point

16
Q

ideal gas law equation

A

PV=nRT

17
Q

molarity equation

A

M=n/L

18
Q

percent yield equation

A

actual/theoretical (100)

19
Q

how to find the energy needed to vaporize a substance

A

multiply: heat of vaporization(# of moles)

20
Q

kinetic molecular theory

A

particles are always in motion, used to related V, P, and T

21
Q

relationhip between T and P

A

linear

22
Q

relationship between P and V

A

inverse

23
Q

relationship between V and T

A

linear

24
Q

steps to make a net ionic equation

A
  1. balance equation and rewrite with ionic charges (seperate out solubles and leave precipitates alone)
  2. cancel spectator ions
25
Q

combined gas law equation (used to relate, P, V, T)

A

PV/T=PV/T

26
Q

what equation can you use for dilutions and 1:1 ratios ONLY

A

M1V1=M2V2

27
Q

how to find amount of substance in ratios that aren’t 1:1

A
  1. find amount of moles in other substance
  2. find grams of the number of moles in same substance
28
Q

how to find volume of amount of substance in ratios that aren’t 1:1

A
  1. find amount of moles in other substance
  2. find grams of the number of moles in same substance
  3. find the volume of that gram amount of the same substance and use the density given to find mL
29
Q

how to draw diagram of what remains in the solution after a reaction has been completed

A
  1. draw H2O molecules
  2. draw spectator ions floating around
  3. draw precipitate (product) at bottom of container in clump (didn’t dissolve so not floating around in solution with the rest)
30
Q

how to find precipitate mass when given mass of filter paper and filter paper with precipitate mass combined

A

combined mass - filter paper mass= precipitate mass

31
Q

how does mass affect desnity

A

more mass=more dense

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