Chemical Effects of Electric Current

What is electroplating?

• The process of removing a layer of metal from a surface using electricity.

• The process of depositing a layer of metal onto a surface using electricity.

• The process of heating metal to change its properties.

• The process of mixing different metals together to create a new material.

Name the metal commonly used for electroplating iron objects.

• copper

• aluminum

• zinc

• gold

What is the purpose of electroplating?

• To deposit a thin layer of metal onto an object for decorative or protective purposes.

• To make the object heavier

• To remove all metal from an object

• To change the color of the object

Explain the process of electroplating.

• The process of electroplating involves the use of an electric current to deposit a thin layer of metal onto a conductive surface.

• Electroplating is the process of mixing different metals together to create a new type of metal.

• In electroplating, a chemical solution is used to coat a non-conductive surface with a thin layer of metal.

• The process of electroplating involves using heat to deposit a thin layer of metal onto a conductive surface.

What are the factors that affect the electroplating process?

• Type of metal, concentration of plating solution, temperature, and current density

• Type of gloves worn by the operator

• Size of the power source

• Color of the plating solution

What are the advantages of electroplating?

• All of the above

• Some of the above

• Only one of the above

• None of the above

How does electroplating prevent corrosion?

• It weakens the metal surface

• It attracts more oxygen

• It forms a protective barrier

• It increases the rate of corrosion

What are some common applications of electroplating?

• Cooking utensils, clothing, and transportation

• Medical equipment, electronic devices, and food packaging

• Building materials, furniture, and household appliances

• Decorative purposes, corrosion protection, and improving surface properties

Explain the role of electrolyte in the electroplating process.

• It helps to cool down the metal being electroplated.

• It provides mechanical support to the electroplating equipment.

• It acts as a lubricant for the electroplating process.

• It provides the ions necessary for the electroplating process to occur.