Ionic Bonding Quiz Grade 8a

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  • 1/13 Questions

    Ionic bonds always form between metals and ___________.

    • Nonmetals
    • Metals
    • Metalloids
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About This Quiz

The 'Ionic bonding Quiz grade 8A' assesses understanding of ionic compounds, focusing on their formation and properties. It covers key concepts such as ion types, electron transfer, and examples of ionic bonds, crucial for students in grade 8A studying chemistry.

Ionic Bonding Quizzes & Trivia

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  • 2. 

    Positively charged ions, called ____________, result from loss of electrons.

    • Cations

    • Anions

    Correct Answer
    A. Cations
    Explanation
    Positively charged ions, called cations, are formed when an atom loses one or more electrons. This loss of electrons creates an imbalance between the positive protons in the nucleus and the negative electrons, resulting in a net positive charge. Therefore, cations are the correct answer since they are positively charged ions that are formed by the loss of electrons.

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  • 3. 

    Negatively charged ions, called ____________, result from gain of electrons.

    • Cations

    • Anions

    Correct Answer
    A. Anions
    Explanation
    Negatively charged ions, called anions, result from the gain of electrons. Anions are formed when an atom or molecule gains one or more electrons, resulting in an excess of negative charge. This gain of electrons increases the overall negative charge of the ion, making it negatively charged. Cations, on the other hand, are positively charged ions that result from the loss of electrons. Therefore, in this context, the correct answer is anions.

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  • 4. 

    When an electron is added to or removed from an atom, the atom becomes a(n) ________.

    • Ion

    • Bond

    • Nothing; it stays an atom

    Correct Answer
    A. Ion
    Explanation
    When an electron is added to or removed from an atom, the atom becomes an ion. An ion is an atom that has gained or lost one or more electrons, resulting in a net positive or negative charge. This process is known as ionization.

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  • 5. 

    Aluminum is a group 3 metal. Which ion does Al typically form?

    • Al3-

    • Al5+

    • Al3+

    • Al5-

    Correct Answer
    A. Al3+
    Explanation
    Aluminum typically forms the Al3+ ion. This is because aluminum belongs to group 3 in the periodic table, which means it has three valence electrons. In order to achieve a stable electron configuration, aluminum loses all three of its valence electrons, resulting in a 3+ charge. Therefore, the correct ion formed by aluminum is Al3+.

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  • 6. 

    NaCl is an example of the chemical formula of

    • An ion

    • A covalent compound

    • An ionic compound

    • A crystal

    Correct Answer
    A. An ionic compound
    Explanation
    NaCl is an example of an ionic compound because it is formed by the transfer of electrons between sodium (Na) and chlorine (Cl) atoms. In this compound, sodium loses one electron to become a positively charged ion (Na+), while chlorine gains one electron to become a negatively charged ion (Cl-). The opposite charges of the ions attract each other and form a stable crystal lattice structure, resulting in the formation of NaCl.

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  • 7. 

    Which element, when combined with fluorine, would most likely form an ionic compound?

    • Phosphorus

    • Lithium

    • Carbon

    • Chlorine

    Correct Answer
    A. Lithium
    Explanation
    Lithium would most likely form an ionic compound when combined with fluorine because lithium is a metal and fluorine is a nonmetal. Metals tend to lose electrons and form positive ions, while nonmetals tend to gain electrons and form negative ions. In the case of lithium and fluorine, lithium would lose one electron to become a positive ion (Li+), and fluorine would gain one electron to become a negative ion (F-). The attraction between these oppositely charged ions would result in the formation of an ionic compound.

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  • 8. 

    Which pair of elements will combine to form an ionic compound?

    • Carbon and chlorine

    • Fluorine and sodium

    • Sulphur and oxygen

    • Oxygen and carbon

    Correct Answer
    A. Fluorine and sodium
    Explanation
    An ionic compound is formed between a metal and a non-metal.

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  • 9. 

    Element X has an electronic structure 2, 8, 8, 1. Element Y has an electronic structure of 2, 8, 6. What is the chemical formula of the compound formed between X and Y?

    • X2Y

    • XY2

    • XY

    • XY3

    Correct Answer
    A. X2Y
    Explanation
    Element X can give away 1 electron each. Y needs to gain 2 electrons. Hence, Y needs 2 of element X. Hence, the formula is X2Y.

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  • 10. 

    Select the formula for strontium chloride.

    • SrCl2

    • SrCl

    • Sr2Cl3

    • SrClO2

    • SrClO3

    Correct Answer
    A. SrCl2
    Explanation
    The correct formula for strontium chloride is SrCl2. This is because strontium is a group 2 element with a +2 charge, while chloride is a group 17 element with a -1 charge. To balance the charges, two chloride ions are needed for every strontium ion, resulting in the formula SrCl2.

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  • 11. 

    How does a magnesium atom form a bond with an oxygen atom?

    • By giving one pair of electrons to the oxygen atom.

    • By sharing one pair of electrons, both electrons provided by the magnesium atom.

    • By sharing two pairs of electrons, both pairs provided by the oxygen atom.

    • By sharing two pairs of electrons, each atom donating one pair of electrons.

    Correct Answer
    A. By giving one pair of electrons to the oxygen atom.
    Explanation
    Magnesium will transfer two electrons from itself to an oxygen atom. So that Mg and O both achieve noble gas configuration of 2, 8.

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  • 12. 

    Lewis dot shows?

    • The total number of electrons

    • Total number of protons

    • Total number of neutrons

    • Number of electrons in highest energy shelf

    Correct Answer
    A. Number of electrons in highest energy shelf
    Explanation
    The Lewis dot structure is a way to represent the valence electrons of an atom or molecule. It shows the number of electrons in the highest energy level or shell, which is also known as the valence shell. This is important because the valence electrons are the ones involved in chemical bonding and determining the reactivity of an atom. Therefore, knowing the number of electrons in the highest energy shelf helps us understand the chemical behavior and properties of an element.

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  • 13. 

    Select the formula for aluminum sulfide.

    • Al2(SO4)3

    • AlS

    • Al2S3

    • Al3(SO3)2

    • AlSO3

    Correct Answer
    A. Al2S3
    Explanation
    The correct formula for aluminum sulfide is Al2S3. This is because aluminum is a trivalent cation with a charge of +3, and sulfur is a divalent anion with a charge of -2. To balance the charges, two aluminum ions combine with three sulfur ions, resulting in the formula Al2S3.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 10, 2015
    Quiz Created by
    Mohammad Sayaheen
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