Deck 10: Solids, Liquids, and Gases

Question 1

Which substance would have the HIGHEST melting point?

A) PCl₃
B) SOCl₂
C) N₂
D) LiCl

Answer 1

LiCl

Question 2

In general, if a gas is compressed (volume decreased), the pressure of the gas will:

A) decrease.
B) increase.
C) not change.
D) cannot be determined from the information provided.

Answer 2

increase.

Question 3

A certain gas has a pressure of 0.759 atm. What is its pressure in psi?

A) 577 psi
B) 11.2 psi
C) 76.9 psi
D) 19.4 psi

Answer 3

11.2 psi

Question 4

Which statement CORRECTLY describes a phase change concerning water?

A) When liquid water gains enough heat, its water molecules will become more ordered and become a solid.
B) When water vapor gets hot enough, it will turn into liquid water.
C) Cooling liquid water can cause the water molecules to move around more easily.
D) Cooling liquid water will cause the water molecules to become more ordered.

Question 5

Which molecule will have the intermolecular attraction of hydrogen bonding?

A) NCl₃
B) SOCl₂
C) O₂
D) HF

Question 6

Which statement defines a solid?

A) Particles are close together and held in a fixed place.
B) Particles are far apart and have very little interaction.
C) Particles are close together but are restricted in their movement.
D) Particles are close together but move freely past each other.

Question 7

Which statement defines a liquid?

A) Particles are close together and held in a fixed place.
B) Particles are far apart and have very little interaction.
C) Particles are close together but are restricted in their movement.
D) Particles are close together but move freely past each other.

Question 8

Which compound will experience the GREATEST degree of hydrogen bonding?

A) NH₂CH₃
B) HN(CH₃)₂
C) C₂H₄
D) NF₃

Question 9

What volume would 12.0 grams of helium occupy at 1.7 atmospheres of pressure and a temperature of 300 K?

A) 0.023 L
B) 22.4 L
C) 174 L
D) 43.4 L

Question 10

At 280 K, a gas has a volume of 1.5 L, and a pressure of 1.0 atm. The gas is heated to 380 K, and the pressure of the gas increases to 1.9 atm. What is the volume of the gas under these new conditions?

A) 1.1 L
B) 0.58 L
C) 0.93 L
D) 1.7 L

Question 11

Which statement CORRECTLY describes an ideal gas?

A) Particles do not interact with each other at all.
B) Particles will have some interaction with each other.
C) Particles will have a good deal of interaction with each other.
D) Particles do not interact with each other at times but will interact at other times.

Question 12

A sample containing 45.0 moles of propane gas at a temperature of 25.0 °C is stored in a 15.0-liter cylinder. What is the pressure of the gas inside the cylinder?

A) 6.2 atm
B) 73.4 atm
C) 22.4 atm
D) 85.6 atm

Question 13

Select the GREATEST pressure.

A) 458 psi
B) 1.41 atm
C) 99.2 kPa
D) 0.822 bar

Question 14

A(n) _____ is composed of long chains of covalently bonded atoms.

A) polymer
B) ionic compound
C) polar covalent molecule
D) London dispersion force

Question 15

Which substance has the STRONGEST forces between its particles?

A) quartz (melting point = 1,610 °C)
B) diamond (melting point = 3,550 °C)
C) sodium chloride (melting point = 801 °C)
D) magnesium oxide (melting point = 2,800 °C)

Question 16

Select the GREATEST pressure.

A) 40 psi
B) 0.9 atm
C) 11 kPa
D) 0.07 bar

Question 17

A gas sample in a container has a pressure of 2.4 atmospheres at a temperature of 0 °C. If the volume of the gas doesn't change, what is the pressure after the system is heated to 100 °C?

A) 0 atm
B) 1.8 atm
C) 3.3 atm
D) 1.4 atm

Question 18

Which statement CORRECTLY describes a phase change concerning water?

A) When liquid water gains enough heat, it will change to a solid.
B) When water vapor gets hot enough, it will turn into liquid water.
C) Cooling water vapor can cause a phase change to liquid water.
D) Cooling liquid water will cause a phase change to water vapor.

Question 19

Which molecule shows the STRONGEST intermolecular interactions?

A) CH₄
B) CO₂
C) BF₃
D) H₂O

Question 20

What are the strongest and weakest forces of attraction between molecules?

A) dipole-dipole forces (strongest) and London dispersion forces (weakest)
B) hydrogen bonds (strongest) and dipole-dipole forces (weakest)
C) hydrogen bonds (strongest) and London dispersion forces (weakest)
D) dipole-dipole forces (strongest) and ionic attractions (weakest)

Question 21

Consider the following equation: 2 H₂ (g) + O₂ (g)  2 H₂O (g)
If 3.0 moles of O₂ (g) reacts fully with oxygen, how many moles of water will be made?

A) 6.5 moles H₂O (g)
B) 6.0 moles H₂O (g)
C) 3.0 moles H₂O (g)
D) 1.5 moles H₂O (g)

Question 22

A balloon noticeably deflated after 2 days within a home. The helium that filled the balloon _____ from it over time.

A) diffused
B) effused
C) evaporated
D) condensed

Question 23

Airbags rapidly produce nitrogen gas through reactions like this one: 2 NaN₃ (s) Na (s) + 3 N₂ (g)
In this reaction, what volume of nitrogen gas can be produced by the reaction of 13.0 g of NaN₃ if the temperature is 350 K and the pressure is 1.2 atmospheres? The formula mass of NaN₃ = 65 g/mol.

A) 23,350 L
B) 7.2 L
C) 4.7 L
D) 0.023 L

Question 24

_____ is/are the process of a gas escaping from a container.

A) Diffusion
B) Effusion
C) Both diffusion and effusion
D) Gas pressure

Question 25

Consider the following equation: C₆H₁₂O₆ (s)  2 C₂H₆O (l) + 2 CO₂ (g)
Which statement is accurate concerning this reaction?

A) 1.0 moles C₆H₁₂O₆ (s) will produce a total of 4.0 moles of gas products.
B) 2 moles of gas are made from 1 mole of C₆H₁₂O₆ (s).
C) 2 moles of gas are made from 2 moles of C₆H₁₂O₆ (s).
D) The ratio of C₆H₁₂O₆ (s) to CO₂ (g) is 1:1.

Question 26

Which gas, in the amount of 1.4 moles, if placed into a 2.5-L balloon would MOST allow that balloon to remain full after several days?

A) SF₆
B) He
C) CO
D) CO₂

Question 27

Consider the following equation: 2 H₂ (g) + O₂ (g)  2 H₂O (g)
If 3.0 moles of H₂ (g) reacts fully with oxygen, how many moles of water will be made?

A) 1.5 moles H₂O (g)
B) 0.75 moles H₂O (g)
C) 3.0 moles H₂O (g)
D) 2.0 moles H₂O (g)

Question 28

_____ is/are the spread of particles through random motion.

A) Diffusion
B) Effusion
C) Both diffusion and effusion
D) Gas pressure

Question 29

Consider the following equation: CO (g) + Cl₂ (g)  COCl₂ (g)
If 0.90 moles of Cl₂ (g) reacts fully with carbon monoxide, how many moles of COCl₂ (g) will be made?

A) 0.90 moles COCl₂ (g)
B) 1.8 moles COCl₂ (g)
C) 0.45 moles COCl₂ (g)
D) 2.7 moles COCl₂ (g)

Question 30

Which gas, in the amount of 0.5 moles, if placed into a 1.0-L balloon would cause that balloon to go flat MOST quickly?

A) He
B) Ne
C) Ar
D) CO₂