Adapted by Nelson Nuñez-Rodriguez
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By David W. Ball
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| QUESTION | ANSWER |
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1. What is the difference between a crystalline solid and an amorphous solid? |
1. At the atomic level, a crystalline solid has a regular arrangement of atoms, whereas an amorphous solid has a random arrangement of atoms. |
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3. Explain how the bonding in an ionic solid explains some of the properties of these solids. |
3. The oppositely charged ions are very strongly held together, so ionic crystals have high melting points. Ionic crystals are also brittle because any distortion of the crystal moves same-charged ions closer to each other, so they repel. |
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5. Explain how the bonding in a covalent network solid explains some of the properties of these solids. |
5. The covalent network solid is essentially one molecule, making it very hard and giving it a very high melting point. |
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7. Which type(s) of solid has/have high melting points? |
7. ionic solids, covalent network solids |
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9. Which type of solid(s) is/are considered relatively soft? |
9. molecular solids |
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11. Predict the type of solid exhibited by each substance.
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11.
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13. Predict the type of solid exhibited by each substance.
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13.
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15. Predict the type of solid exhibited by each substance.
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15.
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