Unit 5 Review
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Questions and Answers

Select your class period:

  • 3rd Period (correct)
  • 4th Period (correct)
  • 5th Period (correct)
  • 6th Period (correct)
  • 7th Period (correct)
  • Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties?

  • S, Se (correct)
  • Cs, Ba
  • C, O
  • P, S
  • Ga, Se
  • What charge does chlorine form when it becomes an ion?

    1-

    The sulfide ion is represented by S 2-.

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

    Which of the following compounds would you expect to be ionic?

    <p>Al2O3</p> Signup and view all the answers

    Cations are typically nonmetals.

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

    Aluminum forms an ion with a charge of _________

    <p>3+</p> Signup and view all the answers

    Carbon is a __________ and sodium is a __________.

    <p>nonmetal, metal</p> Signup and view all the answers

    What is the formula of the compound formed between magnesium ions and oxygen ions?

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

    Match the element with the type of ion it forms:

    <p>Chlorine = 1- Aluminum = 3+ Oxygen = 2- Sodium = 1+</p> Signup and view all the answers

    Which of the following is NOT an ionic compound?

    <p>PCl5</p> Signup and view all the answers

    Of the following, __________ contains the greatest number of electrons.

    <p>S2-</p> Signup and view all the answers

    The element with the symbol __________ is the most similar to nitrogen in chemical and physical properties.

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

    Aluminum is a __________ and phosphorus is a __________.

    <p>metal, nonmetal</p> Signup and view all the answers

    Anions tend to have a __________ charge.

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

    Oxygen is most likely to lose electrons when forming an ion.

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

    Calcium forms an ion with a charge of __________.

    <p>2+</p> Signup and view all the answers

    __________ typically form ions with a 1+ charge.

    <p>Alkali metals</p> Signup and view all the answers

    Match the following elements with their ion charges:

    <p>Sodium = 1+ Oxygen = 2- Calcium = 2+ Chlorine = 1-</p> Signup and view all the answers

    Which of the following compounds would you expect to be ionic?

    <p>K2O</p> Signup and view all the answers

    What is the correct formula for the salt formed by Sr2+ and PO43-?

    <p>Sr3(PO4)2</p> Signup and view all the answers

    The formula for iron(III) oxide is Fe2O3.

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

    Which of the following ions would be iso-electronic with Ar?

    <p>Cl -</p> Signup and view all the answers

    The correct name for Mg(NO2)2 is __________.

    <p>magnesium nitrite</p> Signup and view all the answers

    What is the correct formula for ammonium carbonate?

    <p>(NH4)2CO3</p> Signup and view all the answers

    Which of the following compounds is lead (IV) oxide?

    <p>PbO2</p> Signup and view all the answers

    Which of the following represents the correct name and formula pair?

    <p>Mg(NO3)2 magnesium nitrate</p> Signup and view all the answers

    What is the correct name for CuSO4?

    <p>copper (II) sulfate</p> Signup and view all the answers

    What is the charge on the titanium ion in TiO2?

    <p>+4</p> Signup and view all the answers

    The formula for SnF2 is tin (II) fluoride.

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

    Calcium reacts with a polyatomic ion to form a compound with the general formula Ca(X). What would be the most likely formula for the compound formed between potassium and the polyatomic ion X?

    <p>K2X</p> Signup and view all the answers

    Study Notes

    Chemical Properties of Elements

    • Nitrogen and Phosphorus share similar chemical and physical properties.
    • Elements found in the same group or column of the periodic table tend to have similar chemical properties.
    • The more electrons an element has, the greater its electron count.
    • Elements located on the left side of the periodic table tend to lose electrons, forming cations.
    • Elements located on the right side of the periodic table tend to gain electrons, forming anions.

    Ionic Bonding and Ion Formation

    • Anions possess a negative charge.
    • Alkali metals typically form ions with a +1 charge.
    • Calcium forms ions with a +2 charge.
    • Nitrogen forms ions with a -3 charge.
    • Ionic compounds consist of a metal and a nonmetal forming a neutral compound with opposite charges.
    • Compounds with a metal and a nonmetal are likely to be ionic.

    Predicting Ion Charges

    • Cadmium (Cd) forms +2 charged ions, reflecting its placement on the periodic table.
    • Selenium (Se) is likely to have a -2 charge, aligning with its periodic table position.
    • Elements within the same group on the periodic table exhibit similar charge tendencies.

    Iso-Electronic Elements

    • Isoelectronic ions, such as Al3+ and Ne, have the same electron configuration as Argon.
    • Oxygen and Sulfur share similar chemical and physical properties, being in the same periodic group.
    • Elements in the same periodic group exhibit strong similarities in both physical and chemical properties.

    Identifying Anions

    • The sulfide ion is represented by the chemical formula S2-.

    Classifying Metal and Nonmetal Properties

    • Carbon is a nonmetal, and Sodium is a metal.
    • Metals lose electrons to form cations, while nonmetals gain electrons to form anions.

    Ion Formation and Charge

    • Chlorine forms ions with a -1 charge.
    • Aluminum forms ions with a +3 charge.

    Predicting Ionic Compounds

    • Aluminum oxide, Al2O3, is an example of an ionic compound.
    • Compounds formed between an alkali metal (like potassium) and a nonmetal are likely ionic.

    Recognizing Ionic Compounds

    • PCl5, a compound consisting of phosphorus (nonmetal) and chlorine (nonmetal), is not an ionic compound.
    • Ionic compounds typically involve metals and nonmetals.

    Formulas and Names of Ionic Compounds

    • The formula for the compound formed between magnesium (Mg) and oxygen (O) is MgO.
    • The correct name for CaCl2 is calcium chloride.
    • The salt formed from Sr2+ and PO43- ions has the formula Sr3(PO4)2.
    • The formula Fe2O3 represents iron(III) oxide.
    • The correct name for Mg(NO2)2 is magnesium nitrite.
    • Mg(NO3)2 is correctly named magnesium nitrate.

    Recognizing Specific Compounds

    • Lead (IV) oxide has the formula PbO2.
    • The name SnF2 correctly describes tin (II) fluoride.
    • The charge of the titanium ion in TiO2 is +4.
    • CuSO4 is properly named copper (II) sulfate.

    Predicting Compounds with Polyatomic Ions

    • If calcium forms CaX with a polyatomic ion, the formula with potassium will be KX.
    • The charge of the polyatomic ion is constant.

    Determining Compound Ionicity

    • Compounds with a greater electronegativity difference between the elements are more ionic.
    • Less electronegativity difference usually results in a compound with less ionic character.

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    Ionic Compounds Review PDF

    Description

    This quiz covers the chemical properties of elements, focusing on their behaviors in relation to the periodic table. It explores ionic bonding and the formation of ions, including the prediction of ion charges based on an element's position. Test your knowledge on cations, anions, and the characteristics of ionic compounds.

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