Molecules and Compounds Module Exam Practice Quiz

How are covalent bonds formed?

• Electrons are shared between metals and nonmetals

• Electrons are transferred from metals to nonmetals

• Electrons are shared between nonmetals

• Electrons are transferred to the sea of electrons

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Ionic bonds forms most often between what types of atoms?

• Metals with metals

• Metals with nonmetals

• Nonmetals with nonmetals

• Metalloids with metalloids

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What element is most likely to form an ionic bond with Fluorine (F), a nonmetal?

• Chlorine, a nonmetal

• Calcium, a metal

• Bromine, a nonmetal

• Iodine, a nonmetal

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Sulfur (S) is a group 6 nonmetal with 6 valence electrons. What type of ion will sulfur (S) most likely form?

• A negative ion with a -1 charge

• A positive ion with a +2 charge

• A positive ion with a +1 charge

• A negative ion with a -2 charge

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How many hydrogen (H) atoms will form single covalent bonds with one carbon (C) atom to give a full valence shell?  

• 1

• 2

• 3

• 4

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Two nonmetal atoms sharing electrons unequally will form what type of bond?

• Polar Covalent

• Nonpolar Covalent

• Ionic

• Metallic

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Sulfur (S) has an electronegativity value of 2.5 while Oxygen (O) has an electronegativity value of 3.5. Which of the following statements best describes how Sulfur and Oxygen atoms would bond together?

• Nonpolar Covalent

• Polar Covalent

• Ionic

• Metallic

Hydrogen Chloride (HCl) has a partial positive charge (ẟ+) on the Hydrogen atom and a partial negative charge (ẟ-) on the Chlorine atom. Which statement is true about the Hydrogen Chloride molecule?

• HCl is a nonpolar molecule because the charges are balanced

• HCl is ionically bonded, making it polar

• HCl is a polar molecule because the charges are not balanced

• HCl is covalently bonded, so it has to be nonpolar

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When two atoms bond together to share three pairs of electrons, what type of bond is formed?

• Triple bond

• Single bond

• Double bond

• Metallic bond

What type of covalent bond is the weakest?

• Single

• Triple

• Double

• Nonpolar