Chapter 8, Problem 8.91QP

Interpretation Introduction

Interpretation:

Physical state of $\text{Mg, Cl, Si, Kr, O, I, Hg, Br}$ has to be determined and to find whether these elements exists in the elemental form as atoms, as molecules, or as a three-dimensional network

Concept Introduction:

Three states of matter:

• Solid, liquid and gas.

Solid

• Possess a definite volume and definite shape.
• Particles are closely packed together and unable to move about very much.
• Particle of a solid have very low kinetic energy.

Liquid

• Liquid possess a definite volume, but indefinite shape.
• Particles are less loosely bound than solid and have more kinetic energy than solid.
• The liquid particle is not held in regular shape.

Gas

• Gas possess an indefinite volume and indefinite shape.
• Particles have a great deal of space between them and have high kinetic energy.
• Gas particle have enough kinetic energy to overcome intermolecular forces that hold by solid or liquid or together.

An element exists in a particular elemental form. It can be as atoms, as molecules, or as a three–dimensional network