Chemical Bonds MCQ Exam: Quiz!

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Chemical Bonds MCQ Exam: Quiz! - Quiz


What are chemical bonds? A chemical bond is a long-term attraction between atoms, ions, or molecules that allow for chemical compounds. The bond may result in the electronic force of magnetism between oppositely charged ions as in ionic connections or through the sharing of electrons as in a covalent bond. The strength of chemical bonds varies considerably. This quiz will teach you more about chemical bonds. All the best.


Questions and Answers
  • 1. 

    What type of bond will form between 2 atoms of oxygen?

    • A.

      Metallic

    • B.

      Ionic

    • C.

      Polar covalent

    • D.

      Nonpolar covalent

    Correct Answer
    D. Nonpolar covalent
    Explanation
    Because oxygen is a nonmetal it would form a covalent bond. Because the atoms are identical, they would have the same pull on the shared electrons so it would be a nonpolar bond.

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  • 2. 

    What type of bond will form between nitrogen and oxygen?

    • A.

      Metallic

    • B.

      Ionic

    • C.

      Polar covalent

    • D.

      Nonpolar covalent

    Correct Answer
    C. Polar covalent
    Explanation
    Nitrogen and oxygen are both nonmetals making it covalent, but oxygen would have a stronger pull on the shared electrons, meaning it would be polar.

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  • 3. 

    An atom that has lost or gained electrons is called ____________.

    • A.

      An isotope

    • B.

      An ion

    • C.

      An allotrope

    • D.

      A neutral atom

    Correct Answer
    B. An ion
    Explanation
    An ion is an atom that has lost or gained electrons. When an atom loses electrons, it becomes positively charged and is called a cation. Conversely, when an atom gains electrons, it becomes negatively charged and is called an anion. Therefore, an ion is the correct term to describe an atom that has lost or gained electrons.

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  • 4. 

    A(n) _____________ tells what elements make up a compound and the ratios of the atoms of those elements. 

    Correct Answer
    chemical formula
    Explanation
    A chemical formula is a representation of a compound that shows the elements present in the compound and the ratio of atoms of those elements. It provides information about the composition of the compound and helps in understanding its structure and properties. By using chemical symbols and subscripts, a chemical formula conveys the type and number of atoms in a compound, allowing scientists to accurately describe and communicate chemical compositions.

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  • 5. 

    Which elements are least likely to combine chemically with other elements?

    • A.

      Metals

    • B.

      Nonmetals

    • C.

      Metalloids

    • D.

      Noble gases

    • E.

      Transition metals

    • F.

      Synthetics

    Correct Answer
    D. Noble gases
    Explanation
    Noble gases have reached an octet configuration and are more stable as they are than they would be after bonding with any other atoms.

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  • 6. 

    A charged group of atoms that are covalently bonded but act as a single charge particle in an ionic bond is known as a(n) ________________.

    Correct Answer
    polyatomic ion
    polyatomic ions
    Explanation
    "poly" means many, "atomic" refers to the idea that it is made of atoms, and "ion" means it has a charge. In other words, it is a group of atoms that are bonded together covalently but acts as a single charged atom.

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  • 7. 

    A compound that is composed of only two elements is a(n) ____________

    Correct Answer
    diatomic molecule
    diatomic
    diatomic compound
    binary compound
    Explanation
    A compound that is composed of only two elements is called a diatomic molecule, diatomic, diatomic compound, or binary compound.

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  • 8. 

    What type of bond will form between fluorine and sodium?

    • A.

      Metallic

    • B.

      Ionic

    • C.

      Polar covalent

    • D.

      Nonpolar covalent

    Correct Answer
    B. Ionic
    Explanation
    Fluorine is a nonmetal and sodium is a metal. Fluorine needs electrons and sodium wants to give electrons up, so it would be an ionic bond.

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  • 9. 

    What type of bond will form between cobalt and iron?

    • A.

      Metallic

    • B.

      Ionic

    • C.

      Polar covalent

    • D.

      Nonpolar covalent

    Correct Answer
    A. Metallic
    Explanation
    cobalt and iron are both metals so they would bond metallically

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  • 10. 

     A positive or negative number that is assigned to an element to show its combining ability in a compound is a(n) ________.

    Correct Answer
    oxidation number
    oxidation numbers
    Explanation
    Oxidation numbers are numbers that are related to the number of valence electrons one needs to gain or lose to have a stable outer shell. Specifically it is the charge on the most common ion that would be formed.

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  • 11. 

    How many atoms of oxygen are present in Ba(N?

    • A.

      3

    • B.

      2

    • C.

      4

    • D.

      6

    Correct Answer
    D. 6
    Explanation
    Ba(N3)2 contains 2 nitrate ions (N3-) and each nitrate ion contains 3 oxygen atoms. Therefore, there are a total of 2 x 3 = 6 oxygen atoms present in Ba(N3)2.

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  • 12. 

    How many potassium atoms are present in 4 S?

    • A.

      0

    • B.

      2

    • C.

      4

    • D.

      8

    Correct Answer
    D. 8
    Explanation
    In this question, the number of potassium atoms is being asked in 4S. The symbol "S" is not commonly used to represent any element, so it is likely a typo or an incomplete question. Without further information, it is not possible to determine the correct answer or provide an explanation.

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  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jan 02, 2012
    Quiz Created by
    Baigner
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