Chemical Bonding and Polarity

Electronegativity and Polarity Discussion

Multiple Choice

What are the two type of covalent bond?

• Single bond and double bond
• Ionic bond and metallic bond
• Hydrogen bond and van der Waals bond
• Nonpolar covalent bond and polar covalent bond

Multiple Choice

What does it mean if a bond is nonpolar covalent?

• A bond is nonpolar covalent if it has a strong positive charge.
• A bond is nonpolar covalent if the electrons are completely transferred between atoms.
• A bond is nonpolar covalent if it forms ionic compounds.
• A bond is nonpolar covalent if the electrons are shared equally between the atoms, resulting in no charge separation.

Multiple Choice

What does it mean by polar covalent bond?

• A polar covalent bond is a type of chemical bond where electrons are shared unequally between two atoms, leading to partial charges.
• A polar covalent bond is a type of ionic bond where electrons are shared equally.
• A polar covalent bond occurs when two atoms have identical electronegativity.
• A polar covalent bond is a bond formed by the complete transfer of electrons between two atoms.

Multiple Choice

How do scientists determine if a bond is polar or nonpolar?

• All bonds between the same atoms are always polar.
• A bond is nonpolar if it is formed between metals.
• A bond is polar if it has a double bond.
• A bond is polar if there is a significant electronegativity difference between the atoms; otherwise, it is nonpolar.

Multiple Choice

What is electronegativity?

• Electronegativity is the ability of an atom to attract electrons in a chemical bond.
• Electronegativity is the ability of an atom to lose electrons easily.
• Electronegativity refers to the energy released during a chemical reaction.
• Electronegativity is the measure of an atom's size.

​Polar or Nonpolar?

Multiple Choice

The electronegativity difference in the bonds of CH₄ (methane) is:

• 0.4
• 5.9
• -0.4
• 1.7

Multiple Choice

The electronegativity difference in the bonds of CCl₄ (carbon tetrachloride) is:

• 0.4
• 0.5
• 9.5
• 5.5

Multiple Choice

Is the C-O bond in CO₂ nonpolar, polar, or ionic?

• nonpolar
• polar
• ionic
• covalent

Multiple Choice

Which molecule contains bonds of GREATER polarity?

• H₂O

• OF₂

Multiple Choice

Which molecule contains bonds with a GREATER polarity?

• HCl
• CCl₄

Multiple Choice

This is an example of a __________ bond.

• non-polar covalent
• polar covalent
• ionic
• metallic

Multiple Choice

Partial charges like the ones shown here are called:

• dipoles
• deltas
• ions
• magnetic poles

​Showing Polarity (dipole)

​Signma Notation

​Arrow Notation