Unit 5&6 Test Review

Front

What is the chemical formula for Fluorine trisulfide?

Back

FS₃

Front

What is the correct Lewis structure for Li₂O?

Back

The correct Lewis structure shows lithium atoms each bonded to an oxygen atom with appropriate electron pairs.

Front

Define a lone pair in chemistry.

Back

A lone pair is a pair of non-bonding electrons that are not shared with another atom.

Front

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

Back

The correct structure shows two fluorine atoms each with three lone pairs and a single bond between them.

Front

Is CS₂ polar or nonpolar?

Back

CS₂ is nonpolar.

Front

What is a Lewis structure?

Back

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

Front

What does it mean for a molecule to be polar?

Back

A polar molecule has a net dipole moment due to the presence of polar bonds and an asymmetrical shape.

Front

What is the significance of lone pairs in molecular geometry?

Back

Lone pairs can affect the shape of a molecule by repelling bonding pairs, leading to different geometries.

Front

How do you determine the polarity of a molecule?

Back

To determine polarity, assess the electronegativity differences between atoms and the molecular shape.

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.