Unit 6 - Review - Covalent Bonding

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that requires more energy to break the existing bonds in the reactants than is released when new bonds form in the products.

Front

What is the correct name for N2O4?

Back

Dinitrogen tetroxide.

Front

What is a hydrogen bond?

Back

A hydrogen bond is a strong dipole-dipole force between the hydrogen end of one dipole and a fluorine, oxygen, or nitrogen atom on another dipole.

Front

How is the polarity of a bond determined?

Back

The polarity of a bond is determined by the difference in the electronegativities of the two atoms involved.

Front

Why are resonance structures used when drawing the nitrate ion?

Back

Resonance structures are used because equivalent structures can represent the ion.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond formed when two atoms share one or more pairs of electrons.

Front

What is electronegativity?

Back

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

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of covalent bond where the electrons are not shared equally between the two atoms, resulting in a dipole moment.

Front

What is a nonpolar covalent bond?

Back

A nonpolar covalent bond is a type of covalent bond where the electrons are shared equally between the two atoms.

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.