Chapter 11 Vocabulary
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1
What is the strength of Gas Intermolecular forces?
Weak
2
Will Hvap always be negative or positive?
Positive
3
Substances with lower vapor pressures have...
Stronger Intermolecular forces
4
What is the strength of Liquid intermolecular forces?
Moderate
5
What is the phase change for "melting"?
Solid to Liquid
6
What is the phase change for "Sublimation"?
Solid to Gas
7
What is the phase change for "Deposition"?
Gas to Solid
8
Stronger Dipole Dipole IM forces means...
Higher BP and MP
9
What do Hydrogen bonds have?
Strong intermolecular attractive forces
10
What is the strongest intermolecular force?
Ion-Dipole forces
11
A higher surface tension means...
Stronger Intermolecular Attractive Forces
12
Larger Viscosity means...
Larger Intermolecular Attractions
13
What does raising temperature reduce?
Viscosity and Surface Tension
14
A faster rate of evaporation means...
Weaker attractive forces
15
What increases rate of evaporation?
Increase of Temperature
16
Liquids that evaporate easily?
Volatile
17
Explain Exothermic process
Transfer of heat from system into surroundings
18
Explain Endothermic process
Absorption of heat from surroundings into system
19
Explain kinetic molecular theory for Gases...
The kinetic energy is so large it overcomes the attractions between particles.
20
Explain Dipole Dipole forces...
When the positive end of a polar molecule attracts the negative end of a polar molecule
21
What kind of forces are present in ALL molecules and atoms?
Dispersion forces
22
If a molecule is harder to boil that means...
Stronger dispersion forces
23
Polar molecules have a ______ and ______ than nonpolar molecules
Higher melting point, higher boiling point
24
Nonpolar molecules have _______ properties...
Hydrophobic
25
Polar molecules have _______ properties...
Hydrophilic
26
Larger surface to surface contact between molecules results in...
Stronger dispersion forces
27
What is the phase change for "Condensation"?
Gas to Liquid
28
What is the strength of Solid intermolecular forces?
Strong
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