Chemical Effects of Electric Current

What are conductors in the context of electricity?

• Materials that absorb electric current

• Elements that generate electric current

• Substances that block the flow of electric current

• Materials that allow the flow of electric current

Identify the best conductor of electricity.

• Gold

• Silver

• Aluminum

• Copper

What are insulators and how do they differ from conductors?

• Insulators and conductors have the same properties.

• Insulators are materials that do not allow the flow of electricity, while conductors are materials that allow the flow of electricity.

• Conductors are materials that do not allow the flow of electricity.

• Insulators are materials that enhance the flow of electricity.

Explain the chemical effects of electric current with an example.

• Electric current has no chemical effects

• One example is the electrolysis of water, where water molecules are split into hydrogen and oxygen gases.

• Electric current turns water into solid ice

• Electric current causes explosions in water

What is electroplating and how is it used in everyday life?

• Electroplating is a technique for growing plants using electricity.

• Electroplating is a method used to create artificial gemstones.

• Electroplating is a process where a metal object is coated with a thin layer of another metal using electricity. It is used in everyday life to enhance the appearance of objects, prevent corrosion, improve conductivity, and create decorative finishes.

• Electroplating is a process where metals are melted together without electricity.

Describe the process of electrolysis and provide an example.

• Electrolysis is the process of using an electric current to drive a non-spontaneous chemical reaction. For example, in the electrolysis of water, H2O decomposes into H2 and O2.

• An example of electrolysis is the conversion of light energy into electrical energy.

• Electrolysis involves the separation of elements through magnetism.

• Electrolysis is the process of using heat to drive a chemical reaction.

How does corrosion occur in metals?

• Corrosion occurs in metals when they react with substances in the environment, such as oxygen and water.

• Corrosion is caused by metals being exposed to strong magnetic fields.

• Corrosion happens in metals when they are stored in a vacuum.

• Corrosion occurs in metals due to excessive heat exposure.

What are some methods to prevent corrosion?

• Using lemon juice

• Applying protective coatings, using corrosion-resistant materials, cathodic protection, proper maintenance

• Ignoring the issue

• Exposing to extreme temperatures

What is an electrochemical cell and how does it work?

• An electrochemical cell is a device that converts solar energy into electrical energy through redox reactions.

• An electrochemical cell is a device that converts mechanical energy into electrical energy through redox reactions.

• An electrochemical cell is a device that converts chemical energy into electrical energy through redox reactions.

• An electrochemical cell is a device that converts heat energy into electrical energy through redox reactions.

Give an example of a common electrochemical cell.

• Galvanic cell

• Daniell cell

• Voltaic cell

• Leclanché cell