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59 Cards in this Set
- Front
- Back
Label the following: ice, liquid water, vapor water, melting point and temp, boiling point and temp, each axis,
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Where are the 3 phases?
Where is the supercritical liquid? Where are the triple and critical points? |
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Are polar molecules hydrophilic or hydrophobic?
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hydrophilic
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Are non-polar molecules hydrophilic or hydrophobic?
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hydrophobic
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What kind of substances are detergents?
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amphipathic
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The rate of evaporation in a closed container is ____ the rate of condensation.
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equal to
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While a pure liquid is boiling, the temperature is _____.
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constant
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Is evaporation endothermic or exothermic?
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endothermic
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Is condensation endothermic or exothermic?
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exothermic
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The solid to gas change of state is called ____. Is it exothermic or endothermic?
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sublimation
endothermic |
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The solid to liquid change of state is called ____ or ____. Is it exothermic or endothermic?
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melting/fusion
endothermic |
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The liquid to solid change of state is called ____. Is it exothermic or endothermic?
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freezing
exothermic |
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The liquid to gas state of change is called ____. Is it exothermic or endothermic?
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vaporization
endothermic |
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The gas to liquid state of change is called ____. Is it exothermic or endothermic?
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condensation
exothermic |
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Which substance has the highest boiling point and why?
CH3CH2CH2CH2OH OR CH3CH2OCH2CH3 |
CH3CH2CH2CH2OH because of the H-bond
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What is the best way to tell in a C H O chain, which one has the highest boiling point?
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whichever has the higher imf's
OH in it will have higher imf's whichever is biggest will also have higher imf's |
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Place the following in order of increasing imf's.
1. CH4 2. CH3CH2CH3 3. CH3CH3 |
1<3<2
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Dispersion forces are also called ____.
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London forces
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The bigger the London forces the ____ the molar mass.
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larger
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The smaller the dispersion forces the ____ the molar mass.
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smaller
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Liquids have a ____ density than gases.
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higher
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Compared to liquids, gases have a ___ strength of imf's.
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weaker
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What are the four types of bonding? Put them in order of weakest to strongest.
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Dispersion
Dipole-dipole H-bond Ion-dipole |
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What kind of bond force is present in mixtures of ionic compounds and polar compounds?
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Ion-dipole
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Polar liquids are miscible/not miscible with nonpolar liquids.
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not miscible
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Compared to liquids, solids have a ___ strength of imf's.
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stronger
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Polar liquids are miscible/not miscible with polar liquids.
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miscible
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What are immiscible liquids?
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liquids that don't mix
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If one molecule is round and another is oval shaped and they have the same molecular weight, which one has stronger dispersion forces, and why?
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the oval because it has more surface contact between the molecules
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The molar volume of water vapor is ____ than that of liquid water.
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larger
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The molar volume of liquid water is ____ than that of water vapor.
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smaller
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With detergents, H2O bonds to the ____ end and oil bonds to the ____ end.
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hydrophilic
hydrophobic |
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The higher the temperature, the ____ the rate of evaporation.
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faster
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Liquids that evaporate easily are known as ____ liquids. List a few examples.
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volatile
gasoline, fingernail polish remover |
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Liquids that do not evaporate easily are known as ____ liquids. List an example.
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non-volatile
oil |
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The weaker the imf's, the ____ the rate of evaporation.
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faster
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Name the molecular geometries with 2 e- regions, and the degrees.
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Linear
180 |
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Name the molecular geometries with 3 e- regions, and the degrees.
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trigonal planar
bent 120 |
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Name the molecular geometries with 4 e- regions, and the degrees.
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tetrahedral
trigonal pyramidal bent 109.5 |
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Name the molecular geometries with 5 e- regions, and the degrees.
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trigonal bipyramidal
see saw t shaped linear 90 and 120 |
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Name the molecular geometries with 6 e- regions, and the degrees.
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octahedral
square pyramidal square planar 90 |
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imf's influence what three different properties?
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surface tension
viscosity capillary action |
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What is surface tension?
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the tendancy of liquids to minimize their surface area
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The stronger the surface tension would mean the imf's are ____.
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stronger
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What is viscosity?
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the resistance of a liquid to flow
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What three things does viscosity depend on?
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imf's
size and shape of molecules temperature |
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The stronger the imf's the ____ viscous something is.
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more
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____ and ____ molecules are more viscous.
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larger and longer
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____ and ____ molecules are less viscous.
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smaller and shorter
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The higher the temp the ____ viscous something is. Why?
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less
more energy available to overcome imf's |
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In capillary action, cohesive force is ...
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attractive imf's between the liquid molecules
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In capillary action, adhesive force is ...
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attractive imf's that occur between the liquid and the wall of the tube
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Cohesive < Adhesive
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capillary action
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Cohesive > Adhesive
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no capillary action
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Intramolecular forces hold ____ together and are ____ than intermolecular forces.
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atoms
stronger |
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Intermolecular forces hold ____ together and are ____ than intramolecular forces.
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molecules
weaker |
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The rate of vaporization ____ with the increasing surface area.
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increases
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The rate of vaporization ____ with the decreasing surface area.
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decreases
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The gas to solid state of change is called ____. Is it exothermic or endothermic?
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deposition
exothermic |
