unit 5 Bonding 5.1-5.4

Front

What is a bond in chemistry?

Back

A bond is a lasting attraction between atoms that enables the formation of chemical compounds. It involves the sharing or transfer of electrons.

Front

How many electrons are involved in a single bond?

Back

2 electrons make up a single bond.

Front

What is molecular polarity?

Back

Molecular polarity refers to the distribution of electrical charge over the atoms joined by the bond. It determines whether a molecule is polar or nonpolar.

Front

What characterizes a polar molecule?

Back

A polar molecule has an uneven distribution of charge, resulting in a molecule with a positive end and a negative end.

Front

What are intermolecular forces (IMFs)?

Back

Intermolecular forces are forces of attraction or repulsion which act between neighboring particles (molecules, atoms, or ions). They influence the physical properties of substances.

Front

How do stronger intermolecular forces affect vaporization?

Back

Liquids with stronger intermolecular forces are more difficult to vaporize and thus take longer to vaporize.

Front

What is the relationship between intermolecular forces and boiling point?

Back

Substances with stronger intermolecular forces generally have higher boiling points due to the increased energy required to overcome these forces.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have an asymmetrical charge distribution, while nonpolar molecules have a symmetrical charge distribution.

Front

What is an example of a polar molecule?

Back

Hydrochloric acid (HCl) is an example of a polar molecule due to its asymmetrical charge distribution.

Front

What is an example of a nonpolar molecule?

Back

Methane (CH4) is an example of a nonpolar molecule because of its symmetrical charge distribution.