Deck 10: Liquids and Solids

Question 1

Which phases change is an endothermic process? Outcome # 8) DOK 1)

A) freezing
B) evaporation
C) deposition

Answer 1

evaporation

Question 2

Based off of the principles of intermolecular forces, which liquid has the lowest vapor pressure? Outcome # 8) DOK 2) Paired item 1)

A) water
B) ethanol
C) ethyl ether

Answer 2

water

Question 3

Which of the following halogens would have stronger intermolecular forces? Outcome # 8) DOK 1)

A) Br₂
B) Cl₂
C) I₂

Answer 3

I₂

Question 4

What predominate intermolecular force is in CH₃OH? Outcome # 8) DOK 1) Paired item 3)

A) dipole-dipole
B) hydrogen bonding
C) London forces

Question 5

Based off of the principles of intermolecular forces, which liquid has a higher vapor pressure? Outcome # 8) DOK 2)

A) water
B) methanol
C) ethyl ether

Question 6

Water changing from ice to a liquid is an example of _____. Outcome # 8) DOK 1)

A) melting
B) evaporation
C) freezing

Question 7

What predominate intermolecular force is in NH₃? Outcome # 8) DOK 1) Paired item 1)

A) dipole-dipole
B) hydrogen bonding
C) London forces

Question 8

Which phases change is an exothermic process? Outcome # 8) DOK 1)

A) freezing
B) melting
C) evaporation

Question 9

What predominate intermolecular force is in CO₂? Outcome # 8) DOK 1) Paired item 2)

A) dipole-dipole
B) hydrogen bonding
C) London forces

Question 10

Sodium chloride changing from a solid to a gas is an example of _____. Outcome # 8) DOK 1)

A) evaporation
B) sublimation
C) boiling

Question 11

At what temperature does water boil in kelvin? Outcome # 7) DOK 1)

A) 373.15 K
B) 273.15 K
C) 173.15 K

Question 12

If it takes you 10 min. to boil an egg to perfection at sea level, how long would it take to boil an egg to your taste in the Carpathian Mountains at elevations of 8,500 ft? Outcome # 8) DOK 3)

A) The boiling point of water in the Carpathian Mountains is less than 100 °C because of lower atmospheric pressure which results in reduced intermolecular forces, so it would take a longer time to boil the egg.
B) The boiling point of water in the Carpathian Mountains is greater than 100 °C because of lower atmospheric pressure which results in increased intermolecular forces, so it would take less time to boil the egg.
C) The boiling point of water is always 100 °C regardless of elevation so it would take the same amount of time to boil the egg.

Question 13

Which statement accurately depicts what happens to water on the molecular level in a tea pot when it begins to boil? Outcome # 9) DOK 3)

A) The molecules begin to move farther apart decreasing their intermolecular forces and they escape the liquid state to enter the gas state.
B) The molecules begin to move closer together overcoming their intermolecular forces which holds them together and they escape the liquid state to enter the gas state.
C) The molecules begin to move farther apart decreasing their intramolecular forces and they escape the liquid state to enter the gas state.

Question 14

Which alkane would have a higher boiling point? Outcome # 8) DOK 1)

A) heptane
B) ethane
C) pentane

Question 15

What predominate intermolecular force is in CH₃CH₂CH₃? Outcome # 8) DOK 1) Paired item 4)

A) dipole-dipole
B) hydrogen bonding
C) London forces

Question 16

Which of the following molecules would have weaker intermolecular forces? Outcome # 8) DOK 1)

A) I₂
B) NH₃
C) H₂O

Question 17

What predominate intermolecular force is in HCl? Outcome # 8) DOK 1)

A) dipole-dipole
B) hydrogen bonding
C) London forces

Question 18

Which alkane would have a lower boiling point? Outcome # 8) DOK 1)

A) CH₃CH₃
B) CH₄
C) CH₃CH₂CH₃