3B Scientific Electrochemistry Kit - Manual (Page 3)

4
Preface
The electrochemistry case is a teaching aid exclusively designed for chemistry and physics
experiments in schools.
The fact that students can perform experiments themselves deepens their understanding of the
subjects being treated. The experiments should be performed in small groups of not more than two
or three students. Thus the teacher is only required to supervise and may also give suitable advice
on specific questions that students are unable to answer themselves. Careful organization of
workgroups can therefore add to the achievement, understanding and enjoyment of all students.
The accompanying literature reduces to a minimum the teacher's preparation time, which may for
school experiments in particular be quite lengthy. With each experiment there are instructions for
both teacher and students. The teacher's instructions include descriptions of all the facts required
for the conduct of the experiment. The expected results for each experiment can be found in the
teacher's instructions. (These may differ slightly from the theoretical results given in text books.)
The teacher is also given instructions on how to prepare suitable electrolyte solutions.
The student instructions can be copied by the teacher and distributed to the students. This means
that there is no need to go to the extra lengths of writing down an experiment procedure, freeing
the student to concentrate on the essentials of the experiments themselves.
To ensure safety, German R (Risk) and S (Safety) phrases and hazard symbols are included for all
chemicals used.
At the end of the instructions, notes can be found on the disposal of chemicals. In order to prevent
wastage on chemicals, we recommend that once an experiment is finished, the electrolyte
solutions that have been used should be removed from the chambers of the trough using the
supplied pipette and stored in a labelled container for use in subsequent experiments. This also
makes a contribution to the environment.
We would be grateful for comments and modifications (or notification of any errors) pertaining to
the experiments. Please contact your supplier for the Electrochemistry case.
We wish you success in carrying out the experiments.