Unit 4 Test Review

Front

What is the Lewis dot structure?

Back

A diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule.

Front

What is the correct Lewis dot structure for the molecule fluorine (F2)?

Back

The correct Lewis dot structure for F2 shows two fluorine atoms, each with three lone pairs and one shared pair of electrons.

Front

What is a double bond?

Back

A double bond is a bond between two atoms where two pairs of electrons are shared.

Front

How are ionic bonds formed?

Back

Ionic bonds are formed through the transfer of electrons from one atom to another.

Front

What is the correct Lewis structure for the compound PBr3?

Back

The correct Lewis structure for PBr3 shows phosphorus in the center bonded to three bromine atoms, with one lone pair on phosphorus.

Front

How many electrons does hydrogen need in its valence shell to be stable?

Back

Hydrogen needs 2 electrons in its valence shell to be stable.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What are lone pairs?

Back

Lone pairs are pairs of valence electrons that are not involved in bonding and belong exclusively to one atom.