Polarity and VSEPR review

Front

What is a lone pair?

Back

A pair of non-bonding electrons.

Front

Identify the molecule: BF3, CH4, H2O, CO2

Back

BF3.

Tags

NGSS.MS-PS1-1

Front

What type of bonds are present in NH3?

Back

Covalent polar.

Tags

NGSS.HS-PS1-1

Front

Is chloroform (CHCl3) a polar or nonpolar molecule?

Back

Polar.

Front

Is F2 a polar or nonpolar molecule?

Back

Nonpolar.

Front

Define polarity in molecules.

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

What is VSEPR theory?

Back

Valence Shell Electron Pair Repulsion theory predicts the geometry of individual molecules based on the repulsion between electron pairs.

Front

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

Back

Tetrahedral.

Front

What is the shape of a molecule with two bonding pairs and two lone pairs?

Back

Bent.

Front

What is the significance of electronegativity in determining polarity?

Back

Electronegativity differences between atoms determine the distribution of charge and thus the polarity of the bond.