Crystals and Their Characteristics

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Questions and Answers

What is a crystal?

  • A gas bounded by naturally formed plane faces
  • A homogeneous solid bounded by naturally formed plane faces (correct)
  • A liquid bounded by naturally formed plane faces
  • A mixture bounded by naturally formed plane faces

What does the term 'crystalline' mean?

  • Having a regular internal arrangement of atoms (correct)
  • Having an irregular internal arrangement of atoms
  • Not having any internal arrangement of atoms
  • Having only crystal faces

Are all minerals crystalline solids?

  • No, minerals can be in any state
  • It depends on the natural environment
  • Yes, all minerals are crystalline solids (correct)
  • Only some minerals are crystalline solids

Where do most well-developed mineral crystals occur?

<p>Lining the walls of open spaces in rocks (A)</p> Signup and view all the answers

How are many crystals deposited in open spaces in rocks?

<p>By condensation from gaseous fluids (A)</p> Signup and view all the answers

What are miarolitic cavities?

<p>Cavities formed by late-stage crystallization of magma within cavities (C)</p> Signup and view all the answers

What is a mineral?

<p>Any material having a regular internal arrangement of its constituent atoms or ions (C)</p> Signup and view all the answers

In what type of solids is the term 'crystalline' applied?

<p>Solids with a regular internal arrangement of atoms or ions (B)</p> Signup and view all the answers

Where do most well-developed mineral crystals occur?

<p>Inside the cavities of rocks (A)</p> Signup and view all the answers

How are many crystals deposited in open spaces in rocks?

<p>By condensation from gaseous fluids (C)</p> Signup and view all the answers

What type of solids are considered as minerals?

<p>Crystalline solids (B)</p> Signup and view all the answers

What is the term used for crystalline solids that do not exhibit crystal faces?

<p>Amorphous solids (D)</p> Signup and view all the answers

What is the name for the cavities generally termed miarolitic?

<p>Cavities kept open by accumulations of magmatic gases and vapors (A)</p> Signup and view all the answers

What is a crystal?

<p>A solid with a regular internal arrangement of atoms or ions (B)</p> Signup and view all the answers

What is the adjective applied to any material having a regular internal arrangement of its constituent atoms or ions?

<p>Crystalline (C)</p> Signup and view all the answers

What are well-developed mineral crystals likely to reflect?

<p>The atomic structure of the crystals (A)</p> Signup and view all the answers

What term is used for any material having a regular internal arrangement of its constituent atoms or ions?

<p>Crystalline (D)</p> Signup and view all the answers

In single crystals, what often reflects the atomic structure?

<p>Natural shapes of crystals (A)</p> Signup and view all the answers

What term is used for mineral crystals that exhibit few or no crystal faces?

<p>Amorphous minerals (D)</p> Signup and view all the answers

What type of fluids have deposited many crystals in open spaces in rocks?

<p>Aqueous solutions (C)</p> Signup and view all the answers

In what type of solids is the term 'crystalline' applied?

<p>Solids with regular atomic arrangement (D)</p> Signup and view all the answers

What is the term used for the cavities generally termed miarolitic?

<p>Cavities kept open by accumulations of magmatic gases and vapors (C)</p> Signup and view all the answers

What are minerals by definition?

<p>'Crystalline' solids (A)</p> Signup and view all the answers

Where do most well-developed mineral crystals occur?

<p>'Walls of open spaces in rocks' (A)</p> Signup and view all the answers

'Crystalline solids that do not exhibit crystal faces' are:

<p>'Amorphous minerals' (D)</p> Signup and view all the answers

What is defined as a homogeneous solid bounded by naturally formed plane faces related to a regular internal arrangement of atoms?

<p>Crystal (B)</p> Signup and view all the answers

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