Electrical conductivity
CB-IN-91/EV
The purpose of the exercise is to carry out comparative tests of electrical conductivity between various substances: metals, non-metals, liquids, crystalline ionic substances, in solution and in a molten state. An electrical circuit is prepared consisting of a 6 volt D.C. power supply connected to a suitable bulb. We conclude that by inserting a conductor in the circuit the bulb lights up, while in the case of an insulator the light bulb does not light up.
Training program
- First part: conductivity tests of some metals and non-metals (zinc, copper, sulphur, paraffin and graphite)
- Second part: conductivity tests of some liquids (water, ethyl alcohol and benzene)
- Third part: conductivity tests of pure substances (potassium iodide, sucrose, glacial acetic acid, crystalline sodium hydroxide) dissolved in water
- Fourth part: conductivity of melted substances
- Fifth part: influence of concentration in the conductivity of a solution
- A salt solution (copper sulphate)
- A strong acid solution (hydrochloric acid)
- Comparison between 0.5 M solutions of hydrochloric acid and acetic acid
Technical specifications
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