Exploring Chemical Bonds and Structures

Which of the following is a characteristic of ionic bonds?

• They involve the sharing of electron pairs between atoms.

• They involve the transfer of electrons from one atom to another.

• They are formed between two nonmetals.

• They are formed between metal atoms.

What type of bond is formed between sodium (Na) and chlorine (Cl) in sodium chloride (NaCl)?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

Which of the following is a property of covalent bonds?

• High melting and boiling points

• Conduct electricity in solid state

• Formed between two nonmetals

• Formed between metals and nonmetals

• Carbon monoxide

• Carbon dioxide

• Carbon trioxide

• Dicarbon monoxide

Tags

NGSS.MS-PS1-1

• Oxygen has two lone pairs of electrons.

• Each hydrogen atom has two lone pairs of electrons.

• Oxygen shares two pairs of electrons with each hydrogen.

• There are no lone pairs on the oxygen atom.

Tags

NGSS.MS-PS1-1

Which of the following best describes metallic bonding?

• Electrons are shared between two atoms.

• Electrons are transferred from one atom to another.

• Electrons are delocalized and move freely among metal cations.

• Electrons are localized between two nonmetal atoms.

Which of the following compounds is named correctly?

Tags

NGSS.MS-PS1-1

Ionic compounds are known to have high melting points and boiling points. Which of the following best explains why this is true?

• They have strong covalent bonds.

• Anions and cations attract each other due to opposite charges.

• They have weak van der Waals forces.

• They have delocalized electrons.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

• Phosphorus pentachloride

• Phosphorus tetrachloride

• Phosphorus hexachloride

• Phosphorus chloride

• Nitrogen has three lone pairs of electrons.

• Each hydrogen atom has one lone pair of electrons.

• Nitrogen shares one pair of electrons with each hydrogen.

• There are no lone pairs on the nitrogen atom.