Chemical Bonding 2023 Review

A covalent bond forms when 2 atoms _______ a pair of electrons.

• transfer

• share

• divide

• double

Covalent compounds form between a __________ and a _________.

• metal, nonmetal

• nonmetal, nonmetal

• metal, metal

• none of these

The __________ rule states that atoms will gain, lose, or share electrons in order to acquire a full set (usually 8) of valence electrons.

• octet

• Dalton’s

• Hund’s

• compound

Which of the following is a binary ionic compound?

• CaCO₃

• NaC₂H₃O₂

• Al₂(SO₄)₃

• FeCl₃

Positive ions are called ____________ and negative ions are called ____________.

• cations, anions

• monatomic ions, cations

• anions, cations

• cations, polyatomic ions

How many valence electrons does a carbon atom have?

• 2

• 4

• 6

• 8

The intermolecular force BETWEEN water molecules that makes them stick together; often represented with dotted lines.

• ionic bonds

• polar covalent bonds

• phobic bonds

• hydrogen bonds

Ionic bonds are very strong bonds, therefore ionic compounds have ____ melting points.

• low

• high

• negative

• single digit

Name: Al₂O₃

• Aluminum oxide

• Ammonium trioxide

• Aluminum trioxide

• Dialuminum oxide

Write the formula: Diboron tetrabromide

• B₂Br₄

• B₂Br₅

• B₄Br₂

• BBr₂