Search for Life Unit Test

Front

What is a nonpolar covalent bond?

Back

A type of chemical bond where two atoms share a pair of electrons equally, resulting in no charge separation.

Front

Which molecule contains a nonpolar covalent bond?

Back

O₂ (Oxygen gas) is an example of a molecule with a nonpolar covalent bond.

Front

How do atoms form chemical bonds?

Back

Atoms form chemical bonds by sharing or exchanging electrons.

Front

What do the two dots in a Lewis structure represent?

Back

The two dots represent a pair of shared electrons.

Front

What is a polar molecule?

Back

A molecule is considered polar if it has an asymmetrical shape, leading to a distribution of charge.

Front

What is a characteristic of covalent bonds?

Back

Electrons are shared between atoms in covalent bonds.

Front

What is the difference between polar and nonpolar molecules?

Back

Polar molecules have an uneven distribution of charge due to their asymmetrical shape, while nonpolar molecules have an even distribution of charge.

Front

What is a lone pair of electrons?

Back

A lone pair of electrons is a pair of valence electrons that are not shared with another atom.

Front

What is the significance of electronegativity in bond formation?

Back

Electronegativity determines how strongly an atom attracts electrons in a bond, influencing whether the bond is polar or nonpolar.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to form bonds in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.