Unit 4 Part 2 Practice Test

Front

What is the formula for dinitrogen pentoxide?

Back

N2O5

Front

What does VSEPR theory state about electron pairs?

Back

It is the tendency for electron pairs to want to be as far apart as possible because valence electrons are repulsed by each other.

Front

What is the space occupied by electrons known as?

Back

electron domain

Front

What is the name of the molecule PCl5?

Back

phosphorus pentachloride

Front

What is the relationship between viscosity and intermolecular forces?

Back

The stronger the intermolecular forces, the higher the viscosity.

Front

Define 'intermolecular forces'.

Back

Forces that mediate interaction between molecules, including attractions and repulsions.

Front

What is a 'lone pair' in chemistry?

Back

A pair of valence electrons that are not shared with another atom.

Front

What is a 'bonding pair'?

Back

A pair of electrons that are shared between two atoms to form a covalent bond.

Front

What is the significance of the octet rule?

Back

Atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving stability.

Front

What is the definition of viscosity?

Back

A measure of a fluid's resistance to flow.