Introduction to Chemical Nomenclature
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Questions and Answers

What is the charge of sodium in ionic form?

  • 3-
  • 2+
  • 1+ (correct)
  • 2-

    • Which of the following correctly identifies the charge and symbol for oxygen?

  • O3-
  • O1-
  • O2+
  • O2- (correct)

    • How many sodium atoms are required to combine with one phosphorus atom to achieve a net charge of 0?

  • 3 (correct)
  • 2
  • 1
  • 4

    • What is the name of the ionic compound formed from barium and sulfur?

    <p>Barium sulfide (A)</p> Signup and view all the answers

    What is the charge of fluorine in ionic form?

    <p>1- (B)</p> Signup and view all the answers

    When forming ionic compounds, which element is always written first?

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

    Which of the following represents the correct charge for phosphorus in ionic form?

    <p>3- (D)</p> Signup and view all the answers

    What suffix change is made to the name of a non-metal when forming ionic compounds?

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

    What is the charge of a cation?

    <p>Positive (A)</p> Signup and view all the answers

    Which of the following describes ionic bonding?

    <p>Transfer of electrons from metals to non-metals (B)</p> Signup and view all the answers

    In a water molecule (H2O), how many hydrogen atoms are present?

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

    What type of ions are represented by Na+ and Cl-?

    <p>Na+ is a cation and Cl- is an anion (C)</p> Signup and view all the answers

    Which of the following statements about atoms is incorrect?

    <p>Atoms can be negatively charged. (A)</p> Signup and view all the answers

    What is the molecular formula formed by combining 3 Na+ ions with 1 P3- ion?

    <p>Na3P (C)</p> Signup and view all the answers

    How many examples of anions should be provided according to the learning goal?

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

    What is the correct classification of covalent bonding?

    <p>Sharing of electrons between non-metals (B)</p> Signup and view all the answers

    What is the name of the compound formed from the formula CaF2?

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

    Which of the following best describes an anion?

    <p>A negatively charged ion (C)</p> Signup and view all the answers

    Using the crossing over method, how is the molecular formula for magnesium and bromine determined?

    <p>MgBr2 (D)</p> Signup and view all the answers

    In the old system of naming ionic compounds, what suffix is used for the cation with a lower charge?

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

    What cation charge is associated with the sodium ion (Na+)?

    <p>+1 (D)</p> Signup and view all the answers

    When combining potassium and oxygen, which of the following represents the correct molecular formula?

    <p>K2O (A)</p> Signup and view all the answers

    Which of the following statements about ionic compounds is correct?

    <p>Ionic compounds usually form from metals and nonmetals. (A)</p> Signup and view all the answers

    What is the characteristic of a compound formed using the Stock nomenclature system?

    <p>It includes Roman numerals to denote oxidation states. (C)</p> Signup and view all the answers

    What is the primary purpose of chemical nomenclature?

    <p>To name compounds and identify them systematically (D)</p> Signup and view all the answers

    Which of the following learning goals focuses on representing compounds?

    <p>Represent compounds using chemical formulas, structural formulas, and models (A)</p> Signup and view all the answers

    Which activity is NOT mentioned as part of the programmed instruction?

    <p>Writing chemical equations (A)</p> Signup and view all the answers

    What term describes atoms or groups of atoms that have gained or lost electrons?

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

    What is a necessary prerequisite to writing chemical equations?

    <p>Properly writing chemical formulas (D)</p> Signup and view all the answers

    Which aspect of chemical nomenclature involves the use of charts and tables?

    <p>Assessing prior knowledge with KWL charts (D)</p> Signup and view all the answers

    What is an expected outcome by the end of the programmed instruction?

    <p>Summarizing learned material using a guided concept map (A)</p> Signup and view all the answers

    What does the 'K' in the KWL chart stand for?

    <p>Knowledge of chemical nomenclature (B)</p> Signup and view all the answers

    What is the formula for sulfate?

    <p>SO4 2- (C)</p> Signup and view all the answers

    Which of the following anions is known as permanganate?

    <p>MnO4 - (D)</p> Signup and view all the answers

    Identify the correct name for the ionic compound formed by sodium and nitrite.

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

    What is the correct formula for hydrogen sulfate?

    <p>HSO4- (B)</p> Signup and view all the answers

    Which of the following compounds corresponds to the molecular formula MgCl2?

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

    What is the name of the compound formed when calcium combines with sulfate?

    <p>Calcium Sulfate (A)</p> Signup and view all the answers

    Which of the following statements is true regarding the formula for dichromate?

    <p>It is represented as Cr2O7 2- (C)</p> Signup and view all the answers

    What is the formula for acetate?

    <p>CH3COO- (C)</p> Signup and view all the answers

    Study Notes

    Introduction to Chemical Nomenclature

    • Systematic naming of compounds is essential in chemistry, especially for students pursuing health-related or science majors.
    • Proper identification of compounds aids in subsequent studies like writing and balancing chemical equations.
    • Engage actively in learning through filling exercises and concept maps.

    Learning Goals

    • Differentiate between atoms, molecules, and ions with examples.
    • Represent chemical compounds using various formula types: chemical formulas, structural formulas, and models.
    • Name compounds from their formulas and derive formulas from compound names.
    • Practice writing and naming ionic compounds.

    Atoms, Molecules, and Ions

    • Atoms are the fundamental units of matter.
    • Ions are charged particles:
      • Cations carry a positive charge.
      • Anions carry a negative charge.
    • Molecules consist of atoms and ions that are chemically bonded, typically with a net charge of zero (e.g., H2O).

    Chemical Bonding Types

    • Covalent bonding involves sharing electrons between non-metals.
    • Ionic bonding involves transferring electrons from metals to non-metals.
    • Metallic bonding occurs among metal atoms.

    Charges of Ions

    • Group 1 metals typically form +1 ions (e.g., H1+).
    • Group 2 metals form +2 ions (e.g., Mg2+).
    • Nonmetals from group 7 form -1 ions (e.g., Cl1-), group 6 forms -2 ions (e.g., O2-), and group 5 forms -3 ions (e.g., N3-).

    Naming Ionic Compounds

    • In ionic compounds, metals are named first followed by nonmetals with an -ide suffix.
    • Combine cations and anions so that the overall charge is zero (e.g., Ba2+ + S2- yields BaS, named barium sulfide).
    • Use subscript numbers for multiple atoms needed to balance the ionic charges (e.g., 3Na+ + P3- results in Na3P, named sodium phosphide).
    • The "crossing over" method helps to determine subscripts based on ion charges (e.g., Ca2+ and F- form CaF2).

    Naming with Old and Stock Systems

    • Old system uses historical cation names with suffixes (-ous for lower charge, -ic for higher charge).
    • Stock system indicates oxidation states with Roman numerals in parentheses.

    Common Polyatomic Ions

    • Key polyatomic ions include:
      • OH- : hydroxide
      • NO3- : nitrate
      • SO42- : sulfate
      • CO32- : carbonate
    • Naming conventions include recognizing hydrogen prefixes for ions containing hydrogen.

    Concept Mapping

    • Summarize the key concepts of chemical nomenclature and ionic compounds to solidify understanding.
    • Self-assessment is crucial to measure progress against learning goals.

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    Quiz Team

    Description

    This quiz focuses on the systematic naming of chemical compounds, vital for students in health and science disciplines. It covers crucial concepts like differentiating atoms, molecules, and ions, and proper representation and naming of compounds. Engage in exercises to enhance your understanding of ionic compounds.

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