Textbook Question
Two patterns of packing two different circles of the same size are shown here. For each structure (c) determine the type of two-dimensional lattice (from Figure 12.4). (i)
(ii)
Ch.12 - Solids and Modern Materials
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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Table of contents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Not the one you use?Change textbook
Chapter 12, Problem 19b
(b) Now draw a picture that represents an amorphous solid at the atomic level.
Verified step by step guidance1
Understand that an amorphous solid lacks a long-range order, unlike crystalline solids which have a repeating pattern.
Visualize the atoms or molecules in an amorphous solid as being arranged randomly, without a definite pattern or structure.
Imagine the atoms or molecules as being closely packed together, but not in a regular, repeating lattice.
Consider that the arrangement might resemble a disordered pile of spheres, where each sphere represents an atom or molecule.
Think about how this lack of order affects the properties of the material, such as having no distinct melting point.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Amorphous Solids
Amorphous solids are materials that lack a long-range order or a well-defined crystalline structure. Unlike crystalline solids, where atoms are arranged in a highly ordered pattern, amorphous solids have a random arrangement of atoms. This disordered structure affects their physical properties, such as melting point and mechanical strength, making them distinct from their crystalline counterparts.
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Crystalline vs Amorphous Solids
Atomic Structure
The atomic structure refers to the arrangement of atoms within a material. In the context of amorphous solids, this structure is characterized by a lack of periodicity, meaning that the positions of atoms do not repeat in a regular pattern. Understanding atomic structure is crucial for visualizing how atoms interact and bond in different types of solids, influencing their overall properties.
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Visual Representation of Solids
Visual representation of solids involves creating diagrams or models that depict the arrangement of atoms in a material. For amorphous solids, this representation typically shows a chaotic and irregular distribution of atoms, contrasting with the orderly lattice seen in crystalline solids. Such visualizations help in understanding the unique properties and behaviors of different solid materials.
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Related Practice
Textbook Question
Two patterns of packing for two different circles of the same size are shown here. For each structure (b) determine the angle between the lattice vectors, g, and determine whether the lattice vectors are of the same length or of different lengths; (i)
(ii)
Textbook Question
Imagine the primitive cubic lattice. Now imagine grabbing the top of it and stretching it straight up. All angles remain 90. What kind of primitive lattice have you made?
Textbook Question
You are given a gray substance that melts at 700 °C; the solid is a conductor of electricity and is insoluble in water. Which type of solid (molecular, metallic, covalent-network, or ionic) might this substance be?
Textbook Question
(a) Draw a picture that represents a crystalline solid at the atomic level.