Search for Life Unit Test

Front

What is the correct formula for lithium oxide?

Back

Li₂O

Front

A molecule is nonpolar if:

Back

It has a symmetrical shape.

Front

Which element is found in the unknown star?

Back

Strontium.

Front

What does a Lewis Dot Model represent?

Back

It shows the bonding between atoms and the lone pairs of electrons.

Front

Which molecule contains a nonpolar covalent bond?

Back

O₂.

Front

Define polar covalent bond.

Back

A bond where electrons are shared unequally between atoms, resulting in partial charges.

Front

What is electronegativity?

Back

The tendency of an atom to attract electrons in a bond.

Front

What is the significance of a symmetrical molecular shape?

Back

It often indicates that the molecule is nonpolar.

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 is a Lewis Dot Structure?

Back

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