Search for Life Unit Test

Front

What is a polar covalent bond?

Back

A type of chemical bond where electrons are shared unequally between two atoms, resulting in a partial positive charge on one atom and a partial negative charge on the other.

Front

What determines the polarity of a covalent bond?

Back

The difference in electronegativity between the two atoms involved in the bond.

Front

How many valence electrons does nitrogen (N) have?

Back

5

Front

What is a Lewis structure?

Back

A diagram that represents the bonding between atoms of a molecule and the lone pairs of electrons that may exist.

Front

What is a polyatomic ion?

Back

An ion composed of two or more atoms that are covalently bonded, which carries a net charge.

Front

Which of the following is NOT a polyatomic ion: Cl-, SO4^2-, NH4+?

Back

Cl- is NOT a polyatomic ion; it is a monatomic ion.

Front

What is the significance of electronegativity in chemical bonding?

Back

Electronegativity determines how strongly an atom attracts electrons in a bond, influencing bond polarity.

Front

What is a nonpolar covalent bond?

Back

A type of bond where electrons are shared equally between two atoms, resulting in no charge separation.

Front

How can you identify an incorrect Lewis structure?

Back

An incorrect Lewis structure may violate the octet rule, have an incorrect number of total electrons, or misrepresent formal charges.

Front

What is the octet rule?

Back

The principle that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.