Ions, Ionic and Covalent Bonds Review

A positively charged ion

• is formed when an atom loses electrons.

• is called an anion.

• is usually a nonmetallic element.

• has more electrons than protons.

When an aluminum atom becomes an ion, it

• loses one electron.

• loses two electrons.

• loses three electrons.

• either b or c

Ionic compounds are normally

• good conductors of electricity in the solid state.

• gases at room temperature.

• formed when a metal transfers its valence electrons to a nonmetal.

• electrically charged.

A(n) ______ is a chemical bond that involves the sharing of electrons to form electron pairs between atoms.

• ionic bond

• covalent bond

• diatomic bond

• gold bond

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In an ionic bond, how does a nitrogen atom most commonly achieve an octet of electrons?

• By gaining 5 electrons.

• By gaining 3 electrons.

• By losing 5 electrons.

• By losing 3 electrons.

Which of the following is the correct Lewis dot diagram of the element fluorine (F)?

• a)

• b)

• c)

• d)

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Ionic compounds are always

• electrically neutral.

• made up of atoms that share electrons.

• composed of only nonmetals.

• gases at room temperature.

What is the charge of an ion formed when an atom loses electrons?

• Negative

• Positive

• Neutral

• No charge

What is a diatomic molecule?

• A molecule with one atom

• A molecule with two of the same atoms

• A molecule with three atoms

• A molecule with two different atoms

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What happens to the electrons in a covalent bond?

• They are transferred from one atom to another.

• They are shared between atoms.

• They are lost to the environment.

• They are destroyed.

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