Chemical Bonds Practice

Why do chemical bonds form?

• Bonds form to decrease potential energy and become less stable.

• Bonds form to decrease potential energy and become more stable.

• Bonds form to increase potential energy and become less stable.

• Bonds form to increase potential energy and become more stable.

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Atoms are most stable when they have a full valence shell. Most atoms are stable with ______ electrons in their valence shell to be complete.

• 1

• 2

• 6

• 8

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Ionic bonds form between

• metals and nonmetals

• nonmetals and nonmetals

• metal cations and mobile electrons

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Metallic substances have special properties due to their ____

• localized electrons

• neutral atoms

• sea of mobile electrons

• crystalline structure

Metals tend to _______ electrons and Nonmetals tend to ______ electrons

• lose, gain

• gain, lose

• share, and gain

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When a cation and anion bond, a _____ bond forms.

• metallic

• covalent

• ionic

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When metals lose electrons, they form

• cations

• anions

• metallic bonds

Which of the following compounds are formed by sharing electrons?

• MgO

• Na₂O

• KCl

• CO₂

Metals tend to be good conductors of heat and electricity because they have

• delocalized, mobile electrons in the valence shell

• localized, static electrons

• delocalized, mobile electrons in the interior shells

• high electronegativity and ionization energy

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Which element is most likely to form an ionic bond with an element in Group 17?

• Sodium (Na)

• Nitrogen (N)

• Oxygen (O)

• Sulfur (s)

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