End Show © Copyright Pearson Prentice Hall Slide 1 of 19 The Nature of Solids In 1985, scientists...
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End Show © Copyright Pearson Prentice Hall Slide 1 of 19 The Nature of Solids In 1985, scientists discovered a new form of carbon. They called this form of carbon buckminsterfullerene, or buckyball for short. You will learn how the arrangement of particles in solids determines some general properties of solids. 13. 3
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Transcript of End Show © Copyright Pearson Prentice Hall Slide 1 of 19 The Nature of Solids In 1985, scientists...
End Show© Copyright Pearson Prentice Hall
Slide 1 of 19
The Nature of Solids
In 1985, scientists discovered a new form of carbon. They called this form of carbon buckminsterfullerene, or buckyball for short. You will learn how the arrangement of particles in solids determines some general properties of solids.
13.3
End Show© Copyright Pearson Prentice Hall
The Nature of Solids >
Slide 2 of 19
A Model for Solids
A Model for Solids
How are the structure and properties of solids related?
The general properties of solids reflect the orderly arrangement of their particles and the fixed locations of their particles.
13.3
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The Nature of Solids
Slide 3 of 19
> A Model for Solids
The melting point (mp) is the temperature at which a solid changes into a liquid.
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Slide 4 of 19
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>The Nature of Solids Crystal Structure and Unit Cells
In a crystal, the particles are arranged in an orderly, repeating, three-dimensional pattern called a crystal lattice.
13.3
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Slide 5 of 19
© Copyright Pearson Prentice Hall
>The Nature of Solids Crystal Structure and Unit Cells
Three kinds of unit cells can make up a cubic crystal system.
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Slide 6 of 19
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>The Nature of Solids Crystal Structure and Unit Cells
Allotropes
Allotropes are two or more different molecular forms of the same element in the same physical state.
• Allotropes have different properties because their structures are different.
• Only a few elements have allotropes.
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Slide 7 of 19
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>The Nature of Solids Crystal Structure and Unit Cells
Carbon Allotropes
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Slide 8 of 19
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>The Nature of Solids Crystal Structure and Unit Cells
Non-Crystalline Solids
An amorphous solid lacks an ordered internal structure.
• Rubber, plastic, asphalt, and glass are amorphous solids.
• A glass is a transparent fusion product of inorganic substances that have cooled to a rigid state without crystallizing.
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Slide 9 of 19
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>The Nature of Solids Sublimation
Sublimation
When can sublimation occur?
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Slide 10 of 19
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>The Nature of Solids17.4 Sublimation
The change of a substance from a solid to a vapor without passing through the liquid state is called sublimation.
Sublimation occurs in solids with vapor pressures that exceed atmospheric pressure at or near room temperature.
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Slide 11 of 19
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>The Nature of Solids Sublimation
When solid iodine is heated, the crystals sublime, going directly from the solid to the gaseous state. When the vapor cools, it goes directly from the gaseous to the solid state.
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Slide 12 of 19
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>The Nature of Solids Concept Map 13
Solve the Concept Map with the help of an interactive guided tutorial.
