IB Chemistry home > Syllabus 2016 > Stoichiometry > Practical descriptions

Syllabus ref: 1.3

One of the skills required to tackle chemistry questions is the ability to understand descriptions of experiments and to construct equations from these descriptions. The basic experimental terminology is essential in order to follow any procedure. For example, there are several synonyms used for the term "to produce" such as "to give", "to form" etc. This section seeks to make the wording of questions more transparent.


The following is a list of useful terms and their explanations. It is important to differentiate between that which is reacting and that which is produced in a process. Study the words carefully before carying out the exercise. Clues to equation state symbols may also be given by words such as 'precipitate' or 'dissolved'.