Principle

The current-voltage characteristic of an electrolytic bath with copper sulfate solution and copper electrodes is measured. The visible electrochemical changes of the electrodes and the bath are observed.

Benefits

• Particularly comprehensible and didactically prepared description of the experiment (reference to everyday life, etc.) incl. protocol questions.
• Teach in a future-oriented way: Integration into digital science lessons with tablets or smartphones.
• Increased motivation among students through use of the intuitive measureAPP.
• Increased media literacy.
• No additional cable connections between the modules necessary - clearer and faster set-up.
• contact reliability due to puzzle-like interlocking building blocks
• Hard gold-plated, corrosion-resistant contacts
• Double learning success: electrical circuit diagram visible on the upper side and real components on the lower side

Tasks

Measure the current-voltage characteristics of an electrolytic bath with copper sulfate solution and copper electrodes. Observe visible electrochemical changes of the electrodes and the bath.

Learning Objectives

With this experiment, students will learn about the principle of electrolysis. They will know that metallic conductors do not change chemically when an electric current flows through them. This experiment should make them aware that the chemical composition of conductive liquids changes when an electric current passes through them.