Chapter 12: Solids

Laura Pepe
Quiz by Laura Pepe, updated more than 1 year ago
Laura Pepe
Created by Laura Pepe over 1 year ago
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Description

University Chemistry 102 Quiz on Chapter 12: Solids, created by Laura Pepe on 02/10/2020.

Resource summary

Question 1

Question
A crystalline solid of an unknown origin forms an aqueous solution that conducts an electrical current. The solid has a high melting point and shatters when struck with a hammer. The solid is likely to be
Answer
  • An ionic bond
  • A covalent network solid
  • A metallic solid
  • A molecular solid

Question 2

Question
What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 200 pm?
Answer
  • 20 pm
  • 71 pm
  • 566 pm
  • 110 pm

Question 3

Question
What is the hybridization of carbon found in the allotrope of graphite?
Answer
  • sp
  • sp2
  • sp3
  • sp4

Question 4

Question
Cubic closest-packing
Answer
  • has a body-centered cubic cell
  • has the same unit cell as a hexagonal closest-packing
  • has a simple cubic unit cell
  • has a face-centered cubic unit cell

Question 5

Question
Dry ice (solid CO2) is which type of solid?
Answer
  • covalent atomic solid
  • ionic solid
  • metallic atomic solid
  • nonbonding atomic solid
  • molecular solid

Question 6

Question
The phase diagram of a substance is shown. What is the physical phase of the substance at T = 100 K and P = 0.1 atm?
Answer
  • gas
  • liquid
  • solid
  • supercritical fluid

Question 7

Question
A certain mineral, M_xM'_yA_z, crystallizes in the cubic unit cell shown below in which gray spheres represent cations M, shaded spheres represent cations M', and black spheres represent anions. How many anions are in the unit cell? [blank_start]3[blank_end] How many cations M are int he unit cell? [blank_start]1[blank_end] What is the empirical formula of the mineral? [blank_start]MM'A3[blank_end]
Answer
  • 3
  • 1
  • MM'A3

Question 8

Question
Which type of spherical packing has the most unused space?
Answer
  • Body-centered cubic
  • cubic closest-packed
  • simple cubic
  • cubic closest-packed and hexagonal closest-packed

Question 9

Question
Identify the type of solid for gold.
Answer
  • Metallic atomic gold
  • Ionic solid
  • nonbonding atomic solid
  • molecular solid
  • networking atomic solid

Question 10

Question
An ionic compound crystallizes in a unit cell having a face-centered cubic array with metal ions, Mn+, and all the tetrahedral holes (inside near corners) occupied by anions, X-. The empirical formula of this ionic compound is
Answer
  • MX
  • M7X4
  • M2X
  • MX2

Question 11

Question
Identify the type of solid for AgCl.
Answer
  • Metallic atomic solid
  • ionic solid
  • nonbonding atomic solid
  • molecular solid
  • networking atomic solid

Question 12

Question
The temperature at which the solid, liquid, and gaseous phase are all in equilibrium is known as the
Answer
  • triple point
  • meting point
  • critical point
  • boiling point

Question 13

Question
Identify the type of interaction between atoms in a networking atomic solid.
Answer
  • hydrogen bonding
  • weak dispersion forces
  • polar bonding
  • covalent bonding
  • ionic bonding

Question 14

Question
Use the diagram to answer the following question. Melting occurs along the
Answer
  • orange to the blue line
  • green to the blue line
  • blue to the green line
  • orange to the green line

Question 15

Question
What terminology best describes the bonding in the following schematic of a metal?
Answer
  • crystal model
  • ionic bonding
  • covalent bonding
  • electron-sea model

Question 16

Question
Identify the packing in the figure shown below
Answer
  • body-centered cubic
  • cubic closest packed (face-centered cubic)
  • simple cubic
  • hexagonal closest packed

Question 17

Question
The normal boiling point of this substance is approximately
Answer
  • 140 degrees celsius
  • 25 degrees celsius
  • 300 degrees celsius
  • 350 degrees celsius

Question 18

Question
The 2 types of solids are known as
Answer
  • Amorphous solid
  • Ionic solids
  • Crystalline solid
  • Liquid crystal solids

Question 19

Question
Crystalline solids have no ordered arrangement.
Answer
  • True
  • False

Question 20

Question
Examples of an amorphous solid which has no ordered arrangement are
Answer
  • Glass
  • Rubber
  • NaCl
  • Polymers

Question 21

Question
[blank_start]Ionic solid[blank_end] = Particles are ions. Regularly 3-D array. Hard, brittle, high melting point. Only conduct electricity in a molten state or dissolved in water.
Answer
  • Ionic solid
  • Molecular solid
  • Covalent Network solid
  • Metallic solid

Question 22

Question
[blank_start]Covalent Network solid[blank_end] = atoms are linked together by covalent bonds throughout the entire crystal.
Answer
  • Metallic solid
  • Ionic solid
  • Molecular solid
  • Covalent Network solid

Question 23

Question
[blank_start]Metallic solid[blank_end] = Pure metals (atoms) large array of atoms where positive nuclei are held together by electrons. "Sea of electrons."
Answer
  • Metallic solid
  • Ionic solid
  • Molecular solid
  • Network covalent solid

Question 24

Question
[blank_start]Molecular solid[blank_end] = particles are molecules. Held together by intermolecular forces. Soft6er, lower melting point and do not conduct electricity in any form.
Answer
  • Molecular solid
  • Covalent Networking solid
  • Metallic solid
  • Ionic solid

Question 25

Question
Which of the following is the most efficient in packing?
Answer
  • Simple cubic
  • Body center
  • Face center

Question 26

Question
Match the edge length formula to the correct unit cell Simple cubic = [blank_start]2r[blank_end] Body center cubic =[blank_start]4r/√3[blank_end] Face center = [blank_start]4r/√2[blank_end]
Answer
  • 2r
  • 4r/√3
  • 4r/√2

Question 27

Question
Octahedral holes are the holes on edges and center of the face center cubic.
Answer
  • True
  • False

Question 28

Question
What is the coordination number for a simple cubic packing?
Answer
  • 8
  • 6
  • 12
  • 4

Question 29

Question
What is the coordination number for body-centered packing?
Answer
  • 8
  • 6
  • 12
  • 4

Question 30

Question
This packing method has 2 alternating layers and touches 12 neighbors.
Answer
  • Simple
  • Body-centered
  • Hexagonal
  • Cubic closest
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