Chapter 12: Solids

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

What is the edge length of a face-centered cubic unit cell made up of atoms having a radius of 200 pm?

What is the hybridization of carbon found in the allotrope of graphite?

Cubic closest-packing

Dry ice (solid CO2) is which type of solid?

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?

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]

Which type of spherical packing has the most unused space?

Identify the type of solid for gold.

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

Identify the type of solid for AgCl.

The temperature at which the solid, liquid, and gaseous phase are all in equilibrium is known as the

Identify the type of interaction between atoms in a networking atomic solid.

Use the diagram to answer the following question. Melting occurs along the

What terminology best describes the bonding in the following schematic of a metal?

Identify the packing in the figure shown below

The normal boiling point of this substance is approximately

The 2 types of solids are known as

Crystalline solids have no ordered arrangement.

Examples of an amorphous solid which has no ordered arrangement are

[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.

[blank_start]Covalent Network solid[blank_end] = atoms are linked together by covalent bonds throughout the entire crystal.

[blank_start]Metallic solid[blank_end] = Pure metals (atoms) large array of atoms where positive nuclei are held together by electrons. "Sea of electrons."

[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.

Which of the following is the most efficient in packing?

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]

Octahedral holes are the holes on edges and center of the face center cubic.

What is the coordination number for a simple cubic packing?

What is the coordination number for body-centered packing?

This packing method has 2 alternating layers and touches 12 neighbors.