Module 18: Chemical Bond Summative Assessment

Name the following binary compound: NaF

Name the following binary compound: CuBr

Name the following covalent compound: CO

Name the following covalent compound: CO ₂

Name the following covalent compound: N₂O

How are ionic and covalent bonds different?

• In a covalent bond, electrons are shared. In an ionic bond, electron transfer occurs.
• Ionic bonds are always nonpolar and covalent bonds are sometimes polar and sometimes nonpolar.
• In an ionic bond, electrons are shared while in a covalent bond, electron transfer occurs.
• Ionic bonds are always between two metals; covalent bonds are not.

When a group 7 element reacts with a group 1 element, what is the effect on the group 1 atom?

• It shares its electron with the other atom.
• It becomes positively charged.
• It becomes negatively charged.
• It forms a double bond.

Which of these elements is most likely to form an ionic bond with potassium?

• chlorine
• sulfur
• phosphorus
• argon

A chemical __ is the force that holds atoms together in a compound.

Atoms combine when the compound is ____ than the separate atoms.

• the same
• less stable
• more stable
• atoms never combine