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Atomic, Ionic and Molecular Solids quiz

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  • What is the main difference between crystalline and amorphous solids?
    Crystalline solids have highly ordered arrangements of particles, while amorphous solids have randomly arranged particles with no discernible pattern.
  • What are the four main types of crystalline solids?
    The four main types are ionic solids, molecular solids, covalent network solids, and metals.
  • What is the smallest unit in an ionic solid?
    The smallest unit in an ionic solid is the ion, specifically a cation and an anion.
  • What type of electrostatic force holds ionic solids together?
    Ionic solids are held together by the attraction between positive and negative ions.
  • What are two typical properties of ionic solids?
    Ionic solids tend to be brittle and hard, and they have high melting points.
  • Give an example of an ionic solid.
    A common example of an ionic solid is sodium chloride (NaCl).
  • What is the smallest unit in a molecular solid?
    The smallest unit in a molecular solid is the molecule.
  • What type of forces hold molecular solids together?
    Molecular solids are held together by intermolecular forces.
  • How do the melting points of molecular solids compare to ionic solids?
    Molecular solids generally have low to moderate melting points, which are lower than those of ionic solids.
  • What is an example of a molecular solid?
    Ice (solid H2O) is an example of a molecular solid.
  • What is the smallest unit in a covalent network solid?
    The smallest unit in a covalent network solid is the atom.
  • What are the properties of covalent network solids?
    Covalent network solids are extremely hard and have very high melting points.
  • Name a common example of a covalent network solid.
    Diamond, a form of carbon, is a common example of a covalent network solid.
  • What is unique about the structure and melting point of amorphous solids?
    Amorphous solids lack a regular pattern and do not have a distinct melting point.
  • What unusual property do amorphous solids like glass or tar exhibit?
    Amorphous solids can flow, which is a property usually associated with liquids and gases, not solids.