Electric current not only powers our devices but also causes chemical changes in substances, a phenomenon called the chemical effects of electric current. When a current flows through a conducting solution, it can trigger reactions that create new substances. Metals such as copper and aluminum are classified as good conductors, while materials like rubber and glass are considered poor conductors.
when electricity flows through a conducting solution
Experiment
Observation: Bubbles are observed near the electrodes when current passes through them.
Analysis
The process of applying a layer of a specific metal onto another material using electricity is known as electroplating.
Artificial jewellery is shining when it is new and after sometime it begins to lose its shine. Same case with bicycle handlebars, nuts, bolts etc. This is because these metals are coated with another metal to give it their lustrous appearance and still keep it cost effective.
Experiment:
Observation:
Analysis:
(Session 2025 - 26)