Unit 2 Exam

Front

What are diatomic molecules?

Back

Diatomic molecules are molecules composed of only two atoms, which can be of the same or different chemical elements.

Front

Why are diatomic molecules like H2, Cl2, and N2 always nonpolar?

Back

The two atoms have the same electronegativity.

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

What shape does a water molecule have and why?

Back

A water molecule has a bent shape due to the two chemical bonds and two lone pairs forming four electron domains.

Front

What is a Lewis structure?

Back

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

Front

What is a space-filling model?

Back

A space-filling model is a molecular model that shows the relative sizes of the atoms and how they fill space in a molecule.

Front

Which element has the greatest electronegativity?

Back

Fluorine (F) has the greatest electronegativity.

Front

What is a functional group in organic chemistry?

Back

A functional group is a specific group of atoms within a molecule that is responsible for the characteristic chemical reactions of that molecule.

Front

What type of smell is associated with compounds containing amine functional groups?

Back

Compounds with amine functional groups typically have a fishy smell.

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 bent or distorted geometries.