Unit 3 Exam Review Prep

Front

What is the Lewis Dot Structure for ammonia (NH3)?

Back

The Lewis Dot Structure for ammonia (NH3) shows nitrogen (N) in the center with three hydrogen (H) atoms bonded to it, and a lone pair of electrons on the nitrogen.

Front

Is N2 polar or non-polar?

Back

N2 is non-polar because it consists of two identical nitrogen atoms sharing electrons equally.

Front

Which transition metal does NOT require a Roman numeral when naming?

Back

Cadmium does not require a Roman numeral when naming because it has a fixed oxidation state of +2.

Front

Is CH2Cl2 polar or non-polar?

Back

CH2Cl2 is polar due to the difference in electronegativity between carbon, hydrogen, and chlorine, leading to a net dipole moment.

Front

What characterizes polar molecules?

Back

Polar molecules have slight positive and negative charges on opposite ends due to unequal sharing of electrons.

Front

What is the definition of a Lewis Dot Structure?

Back

A Lewis Dot 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 electronegativity?

Back

Electronegativity is the tendency of an atom to attract electrons towards itself when forming a chemical bond.

Front

What is the significance of Roman numerals in naming transition metals?

Back

Roman numerals indicate the oxidation state of the transition metal in a compound.

Front

What is a dipole moment?

Back

A dipole moment is a measure of the separation of positive and negative charges in a molecule, indicating its polarity.

Front

What is the difference between polar and non-polar covalent bonds?

Back

Polar covalent bonds occur when electrons are shared unequally, while non-polar covalent bonds occur when electrons are shared equally.