Chemical Effects of Electric Current Quiz

What is the primary function of a dry cell battery?

• To convert electrical energy into light energy

• To convert chemical energy into electrical energy

• To store mechanical energy

• To store thermal energy

In the experiment with carbon rods and saltwater, what is the role of the electrolyte?

• To provide mechanical support

• To insulate the circuit

• To act as a catalyst

• To conduct electricity in liquid form

What is formed on the electrode connected to the positive terminal during electrolysis?

• Hydrogen bubbles

• Oxygen bubbles

• Nitrogen bubbles

• Carbon dioxide bubbles

What is the main purpose of electroplating?

• To increase the weight of an object

• To prevent corrosion and enhance appearance

• To change the color of a metal

• To make metals magnetic

During electroplating, what happens to the copper at the anode?

• It gets deposited on the cathode

• It dissolves into the solution

• It evaporates

• It remains unchanged

Which of the following is an example of electroplating?

• Polishing silverware

• Painting a car

• Welding two metals

• Chromium plating car parts

What is the process called when a layer of metal is deposited on another material using electricity?

• Galvanization

• Anodizing

• Soldering

• Electroplating

What is the electrode connected to the negative terminal of a battery called?

• Anode

• Cathode

• Conductor

• Electrolyte

What is the process of chemical reactions occurring at electrodes in a solution called?

• Reduction

• Combustion

• Oxidation

• Electrolysis

Which of the following is NOT a result of electrolysis?

• Formation of bubbles

• Conversion of light energy

• Electric current flow

• Chemical reaction at electrodes