Polarity and VSEPR review

Front

What are polar and nonpolar bonds?

Back

Polar bonds occur when electrons are shared unequally between two atoms, resulting in a molecule with a positive and negative end. Nonpolar bonds occur when electrons are shared evenly, resulting in no charge separation.

Tags

NGSS.HS-PS1-1

Front

What type of bond is formed when electrons are shared evenly?

Back

Covalent nonpolar bond.

Front

What type of bond is formed when electrons are shared unequally?

Back

Covalent polar bond.

Front

What does VSEPR stand for?

Back

Valence Shell Electron Pair Repulsion.

Front

What is the main purpose of VSEPR theory?

Back

To predict the molecular shape of a molecule based on the repulsion between electron pairs.

Front

How does electronegativity affect bond polarity?

Back

The difference in electronegativity between two atoms determines the polarity of the bond; a larger difference leads to a more polar bond.

Front

What is an example of a polar molecule?

Back

Water (H2O) is a common example of a polar molecule due to its bent shape and the difference in electronegativity between hydrogen and oxygen.

Front

What is an example of a nonpolar molecule?

Back

Carbon dioxide (CO2) is a nonpolar molecule because it has a linear shape and the dipoles cancel each other out.

Front

What is the shape of a molecule with two bonding pairs and no lone pairs?

Back

Linear.

Front

What is the shape of a molecule with four bonding pairs and no lone pairs?

Back

Tetrahedral.