Chemical Effects Of Electric Current 🧪⚡

Conductor

A material which allows current to flow through them.

Good Conductor

A material with high conductivity.

Bad Conductor

A material with low conductivity.

Insulators

Materials that do not allow current to flow through them.

Electrical Conductivity

The ability of a material to conduct electricity.

Tester

A partial circuit made such that it can indicate the presence of a conductor by lighting up a bulb.

Testing elements

Instruments used to test conductivity, including Bulb, Magnetic compass, and Buzzer.

Electrical Conductivity of Liquids

Depends on the presence of ions; liquids need ions for conduction.

Pure water

An insulator due to the absence of ions.

Tap water

A conductor due to the presence of impurities and dissolved salts.

Sugar solution

An insulator because sugar dissolves without providing ions.

To make distilled water a conductor

Acid, Base, or Salt must be added.

Chemical Effects Of Electric Current

Changes observed when electrical current passes through a substance, including color change, gas evolution, and metal deposition.

Effect of electric current on a potato

The part connected to the positive terminal turns green.

Electroplating

Plating of a metal over another metal using electricity.

Anode

Plate connected to the positive terminal in electroplating.

Cathode

Plate connected to the negative terminal in electroplating.

Electrolyte

The aqueous solution containing metal ions essential for deposition of the metal plate.

CuSO4

Copper sulfate, the electrolyte used when copper is the anode.

Zinc sulfate

The electrolyte used when zinc is to be plated.

Uses of electroplating

1. To prevent scratches 2. To prevent corrosion 3. To make things shiny.