Ionic and Covalent Compounds
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Questions and Answers

What is the correct chemical formula for sulfur hexafluoride?

  • SF$_5$
  • S$_2$F$_3$
  • S$_6$F
  • SF$_6$ (correct)

    • How is nitrogen dioxide represented in chemical formula?

  • NO$_2$ (correct)
  • NO$_3$
  • N$_2$O
  • N$_2$O$_2$

    • What is the prefix used to indicate three atoms of an element in a chemical formula?

  • tetra
  • tri (correct)
  • mono
  • di

    • Which of the following correctly identifies the chemical formula for dinitrogen pentoxide?

    <p>N$_2$O$_5$</p> Signup and view all the answers

    What is the correct way to write the formula for dioxygen difluoride?

    <p>O$_2$F$_2$</p> Signup and view all the answers

    Which of the following correctly describes the order of elements in an ionic compound's formula?

    <p>Metal first, followed by nonmetal.</p> Signup and view all the answers

    What is the correct formula for ammonium nitrate?

    <p>NH4NO3</p> Signup and view all the answers

    Which of the following statements about covalent compounds is accurate?

    <p>They involve the sharing of electrons between nonmetals.</p> Signup and view all the answers

    What is the correct way to represent calcium sulfate in a chemical formula?

    <p>CaSO4</p> Signup and view all the answers

    Which of the following compounds is a covalent compound?

    <p>Dinitrogen pentoxide</p> Signup and view all the answers

    What is required for the subscripts in a chemical formula of an ionic compound?

    <p>They must balance the overall charge to be zero.</p> Signup and view all the answers

    Which of the following is true regarding the naming of non-metal anions?

    <p>The names change to end with –ide.</p> Signup and view all the answers

    If there is more than one polyatomic ion in a chemical formula, how should it be represented?

    <p>Each ion must have its own subscript outside parentheses.</p> Signup and view all the answers

    Study Notes

    Ionic and Covalent Compounds

    • Ionic compounds are formed by a metal and a nonmetal
    • Covalent compounds are formed by nonmetals sharing electrons
    • The cation is written first, followed by the anion
    • Subscripts in the formula must create an electrically neutral formula unit
    • Subscripts should be the smallest whole numbers possible
    • If a polyatomic ion appears more than once in the formula, enclose it in parentheses and list the subscript after the parentheses
    • The nonmetal ions are usually named by the element name and changing the ending to -ide (e.g., oxygen-oxide)
    • Prefixes are used to indicate the number of atoms of each element present in a compound (mono=1, di=2, tri=3, tetra=4, penta=5, hexa=6, hepta=7, octa=8, nona=9, deca=10)

    Examples of Ionic Compounds

    • Lithium
    • Calcium
    • Aluminum
    • Oxygen
    • Sulfur
    • Phosphorus

    Examples of Covalent Compounds

    • chlorine trifluoride
    • phosphorus pentachloride
    • sulfur dioxide
    • dinitrogen pentoxide
    • nitrogen dioxide
    • dioxygen difluoride
    • sulfur hexafluoride
    • selenium monoxide
    • Calcium Carbide
    • Mercuric Cyanide
    • Calcium Hydroxide
    • Sodium Hydroxide
    • Ammonium Thiosulfate
    • Ammonium Oxide
    • Calcium Oxide
    • Calcium Sulfate
    • Sodium oxide
    • Calcium Chloride
    • Magnesium nitrate
    • Iron (III) sulfide/ Ferric sulfide

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    Lesson 6 - Writing Chemical Formula of Ionic and Covalent Compounds PDF

    Description

    This quiz explores the formation and naming conventions of ionic and covalent compounds. It covers key principles such as the arrangements of cations and anions, the use of subscripts, and the naming of compounds based on elemental prefixes. Test your knowledge on both types of chemical bonding and their characteristics.

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