Network Solids in Chemistry
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Network Solids in Chemistry

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Questions and Answers

What is the correct formula for potassium oxide?

  • KO
  • K2O (correct)
  • K2O2
  • K2O3
  • Which name corresponds to the formula Fe2O3?

  • Ferrous oxide
  • Ferric oxide
  • Iron(III) oxide (correct)
  • Iron oxide
  • Identify the correct name for the compound CsCl.

  • Chlorine cesium
  • Cesium chlorate
  • Cesorium chloride
  • Cesium chloride (correct)
  • Which of the following correctly identifies the Lewis dot diagram relationship for calcium bromide?

    <p>Calcium donates two electrons to two bromine atoms.</p> Signup and view all the answers

    What is the correct formula for rubidium nitride?

    <p>Rb3N</p> Signup and view all the answers

    Which of the following compounds is classified as ionic?

    <p>BaS</p> Signup and view all the answers

    What type of bond is formed when two nonmetals combine?

    <p>Covalent</p> Signup and view all the answers

    Which statement accurately describes bond breaking?

    <p>Energy is absorbed.</p> Signup and view all the answers

    How are covalent bonds formed?

    <p>By sharing electrons between nonmetals.</p> Signup and view all the answers

    Which of the following represents a property of ionic substances?

    <p>High melting points</p> Signup and view all the answers

    What type of bonding occurs in metals between metal atoms?

    <p>Metallic bonding</p> Signup and view all the answers

    In an exothermic reaction, which statement is true?

    <p>Energy is released.</p> Signup and view all the answers

    What type of bond does CrCl3 contain?

    <p>Ionic bond</p> Signup and view all the answers

    Which of the following compounds contains two shared pairs of electrons?

    <p>O2</p> Signup and view all the answers

    What is the significance of unshared pairs of electrons in determining molecular polarity?

    <p>They can influence the molecular shape and thus polarity.</p> Signup and view all the answers

    Which of the following molecular shapes is always polar?

    <p>Bent</p> Signup and view all the answers

    How can a molecule be nonpolar even if it contains polar bonds?

    <p>It has an even distribution of charge due to molecular symmetry.</p> Signup and view all the answers

    Which compound shows a Lewis Diagram with a total of 8 valence electrons?

    <p>CH4</p> Signup and view all the answers

    What type of bond is present in NaCl?

    <p>Ionic</p> Signup and view all the answers

    What describes the bond type in CO2?

    <p>Covalent</p> Signup and view all the answers

    Which compound represents a covalent bond with polar characteristics?

    <p>H2O</p> Signup and view all the answers

    What is the bond type of Ti?

    <p>Metallic</p> Signup and view all the answers

    Which of the following compounds contains a metallic bond?

    <p>Au</p> Signup and view all the answers

    How do electronegativity values generally change across a period?

    <p>They increase</p> Signup and view all the answers

    Which substance is known for being nonpolar?

    <p>Br2</p> Signup and view all the answers

    What type of bond is found in strontium bromide (SrBr2)?

    <p>Ionic</p> Signup and view all the answers

    Which substance from the table has the strongest intermolecular forces of attraction?

    <p>HF</p> Signup and view all the answers

    Which substance from the table has the weakest intermolecular forces of attraction?

    <p>HI</p> Signup and view all the answers

    Why does HF have the highest boiling point compared to the other substances listed?

    <p>It experiences strong hydrogen bonding.</p> Signup and view all the answers

    Which of the compounds has the strongest surface tension based on intermolecular forces?

    <p>HF</p> Signup and view all the answers

    Which compound will have a higher boiling point: NH3 or N2, and why?

    <p>NH3, due to hydrogen bonding.</p> Signup and view all the answers

    What primarily gives network solids like diamond their high melting points?

    <p>Strong covalent bonds that require significant energy to break.</p> Signup and view all the answers

    What is the defining characteristic of a network solid?

    <p>Atoms bonded in a fixed pattern with strong covalent bonds.</p> Signup and view all the answers

    Why are network solids such as diamonds commonly used in industry?

    <p>They are very hard and maintain structure under high temperatures.</p> Signup and view all the answers

    Study Notes

    Network Solids

    • Diamond is an example of a network solid
    • Carbon atoms bond together with covalent bonds
    • Diamond has a tetrahedral crystal shape
    • Diamond is very hard (10 on the Moh's Scale of Hardness)
    • To scratch diamond, you must break 1000s of strong covalent bonds
    • To melt or boil diamond, you must break 1000s of covalent bonds
    • Network solids are frequently used as abrasives because they are hard and have high melting points

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    Description

    Explore the fascinating world of network solids with a focus on diamond. This quiz covers the unique properties of diamond, including its crystal structure, hardness, and the significance of covalent bonding. Test your knowledge on the characteristics that make network solids crucial in various applications.

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