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Minerals

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Questions and Answers

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?

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?

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?

When grown freely (C) Signup and view all the answers

What holds the C atoms together in a diamond?

Covalent bonds (B) Signup and view all the answers

What is the defining characteristic of a mineral?

Regular arrangement of particles and definite chemical composition (D) Signup and view all the answers

What determines the external shape of a crystal?

Lattice and unit cell (D) Signup and view all the answers

Under what conditions do minerals follow the shape of the internal structure of the unit cell?

Free growing conditions (C) Signup and view all the answers

Why do most rock crystals not show perfect shapes?

Limited availability of space due to other growing crystals (C) Signup and view all the answers

What holds the C atoms together in a diamond?

Covalent bonds (B) Signup and view all the answers

Minerals

Choose a study mode

Podcast

Questions and Answers

What determines the external shape of a crystal?

Why do most rock crystals not show perfect shapes?

What is the chemical composition of a mineral?

In what conditions do minerals follow the shape of the internal structure of the unit cell?

What holds the C atoms together in a diamond?

What is the defining characteristic of a mineral?

What determines the external shape of a crystal?

Under what conditions do minerals follow the shape of the internal structure of the unit cell?

Why do most rock crystals not show perfect shapes?

What holds the C atoms together in a diamond?

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