Front

What are the intermolecular forces present in PCl3?

Back

London dispersion forces and dipole-dipole interactions.

Front

Identify the compound represented by the formula H2S.

Back

Hydrogen sulfide.

Front

What happens to the Coulombic attraction of an electron when it is in a higher energy level?

Back

It has less Coulombic attraction to the nucleus.

Front

What is the molecular shape of a molecule with a trigonal pyramidal geometry?

Back

Trigonal pyramidal.

Front

What type of change is required to separate a compound into its elements?

Back

Chemical change.

Front

Define London dispersion forces.

Back

Weak intermolecular forces arising from temporary dipoles in molecules.

Front

What is dipole-dipole interaction?

Back

Attractive forces between polar molecules due to their permanent dipoles.

Front

Explain the concept of Coulombic attraction.

Back

The force of attraction between positively charged nuclei and negatively charged electrons.

Front

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

Back

Tetrahedral.

Front

Differentiate between physical and chemical changes.

Back

Physical changes do not alter the chemical composition, while chemical changes do.