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Questions and Answers
What determines the external shape of a crystal?
What determines the external shape of a crystal?
- The size of the crystal
- The arrangement of the crystal faces (correct)
- The type of minerals it is composed of
- The presence of gases in the surrounding environment
Why do most rock crystals not show perfect shapes?
Why do most rock crystals not show perfect shapes?
- Due to the irregular shape of the unit cell
- Because of impurities in the crystal structure
- Due to too little space caused by other growing crystals (correct)
- As a result of rapid cooling of the molten rock
What is the chemical composition of a mineral?
What is the chemical composition of a mineral?
- It is always composed of a single element
- It has no specific chemical composition
- It has a definite small range of chemical composition (correct)
- It can have a wide range of chemical composition
In what conditions do minerals follow the shape of the internal structure of the unit cell?
In what conditions do minerals follow the shape of the internal structure of the unit cell?
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What holds the C atoms together in a diamond?
What holds the C atoms together in a diamond?
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What is the defining characteristic of a mineral?
What is the defining characteristic of a mineral?
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What determines the external shape of a crystal?
What determines the external shape of a crystal?
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Under what conditions do minerals follow the shape of the internal structure of the unit cell?
Under what conditions do minerals follow the shape of the internal structure of the unit cell?
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Why do most rock crystals not show perfect shapes?
Why do most rock crystals not show perfect shapes?
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What holds the C atoms together in a diamond?
What holds the C atoms together in a diamond?
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