Unit 5 Post-Assessment Remediation (PAR)

Front

What occurs in order to break the bond in a Cl₂ molecule?

Back

Energy is absorbed.

Front

Which Lewis electron-dot diagram represents calcium oxide?

Back

Diagram 4.

Front

How are the bonds in BaO best described?

Back

Ionic, because valence electrons are transferred.

Front

What describes the charge distribution and polarity of a CH₄ molecule?

Back

The charge distribution is symmetrical and the molecule is nonpolar.

Front

Which bond has the greatest degree of polarity?

Back

The bond between H and O.

Front

What is a covalent bond?

Back

A bond formed when two atoms share one or more pairs of electrons.

Front

What is an ionic bond?

Back

A bond formed when one atom transfers electrons to another atom.

Front

What is polarity in molecules?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

What is a Lewis electron-dot diagram?

Back

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

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms.