Covalent Bonds

What is the main idea of covalent bonds as described in the document?

• Atoms lose stability when they share electrons.

• Atoms gain stability when they share electrons and form covalent bonds.

• Atoms share protons to form covalent bonds.

• Atoms do not interact when forming covalent bonds.

What term is used to describe a connection where atoms share electrons to form a molecule?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Which of the following best describes a molecule?

• A type of reaction

• A single atom

• A compound that consists of two or more atoms bonded together

• A form of energy release

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What is a Lewis structure used to represent?

• The physical appearance of chemical compounds

• The energy changes in chemical reactions

• The arrangement of valence electrons around atoms in a molecule

• The speed of a chemical reaction

How do metals and nonmetals gain stability?

• By sharing protons

• By sharing neutrons

• By transferring electrons to form ions with stable noble-gas electron configurations

• By isolating electrons

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What is a covalent bond?

• A) A bond formed by the transfer of electrons.

• B) A bond formed by the sharing of electrons.

• C) A bond formed by the attraction between ions.

• D) A bond formed by the repulsion between atoms.

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Which of the following is true about molecules in a covalent bond?

• A) They are formed by atoms of metallic elements.

• B) They are formed by atoms sharing protons.

• C) They are formed when two or more atoms bond covalently.

• D) They are generally less stable than individual atoms.

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Covalent bonds are most likely to form between which types of elements?

• A) Metallic and nonmetallic elements.

• B) Nonmetallic elements.

• C) Ionic compounds.

• D) Isolated neutral atoms.

What does the image in your class slides illustrate about the electron pairs in a fluorine molecule?

• Only bonding electron pairs are present.

• Only non-bonding electron pairs are present.

• Both bonding and non-bonding electron pairs are present.

• No electron pairs are present.

What is formed when two hydrogen atoms share a pair of electrons?

• A helium atom

• A hydrogen molecule

• A covalent bond

• An ionic bond