1. Module 7

1.32. Module Glossary

Module 5 Glossary

Module 7—Principles of Chemical Equilibrium

Module Glossary

 

closed system: a system that is separated from its surroundings by a definite boundary so that energy can enter and leave the system but matter cannot

 

dynamic equilibrium: the idea that there is a balance between two opposing processes (forward and reverse) occurring at the same rate

 

The balance between the forward and reverse processes maintains the system’s appearance of constant properties, in spite of change that has occurred internally.

 

equilibrium: the state of a closed system in which the system does not appear to change 

 

For a chemical system, physical properties, like colour, remain constant and concentrations of substances within the system do not change.

 

macroscopic: can be observed with the unaided eye or other senses

 

microscopic: cannot be observed with the unaided eye or other senses

 

open system: a system in which both matter and energy can enter and leave the system

 

static equilibrium: the idea that forces on an object are opposing and equal

 

The object remains constant because no changes are happening internally.