11. Chemical Effects of Electric Current

11. Chemical Effects of Electric Current

  • 11

    Chemical Effects Of Electric Current

    This section explores how electric currents can chemically affect materials, especially liquids, and introduces the concept of electroplating.

  • 11.1

    Do Liquids Conduct Electricity?

    This section explores the conductivity of liquids and how they interact with electric current, detailing experiments that demonstrate the chemical effects of electric current in various liquids.

  • 11.2

    Chemical Effects Of Electric Current

    This section explores how electric currents can induce chemical reactions in substances, affecting their composition, and includes practical applications such as electroplating.

  • 11.3

    Electroplating

    Electroplating is a process that involves depositing a layer of one metal onto another using electric current, enhancing the properties of the underlying material.

  • 11.4

    Activities

    This section explores the chemical effects of electric current by conducting various experiments to test the conductivity of liquids.

  • 11.4.1

    Activity 11.1

    This section explores the chemical effects of electric current on various liquids, utilizing testers to observe electrical conductivity.

  • 11.4.2

    Activity 11.2

    This section explores whether liquids conduct electricity by experimenting with a tester and different liquids.

  • 11.4.3

    Activity 11.3

    This section explores the conduction of electricity through various liquids using simple electric testers, highlighting the chemical effects of electric current.

  • 11.4.4

    Activity 11.4

    This section explores the conduction of electricity through liquids, specifically distilled water and salt solutions, and discusses the chemical effects of electric current.

  • 11.4.5

    Activity 11.5

    This section explores the chemical effects of electric current, particularly how various liquids conduct electricity and how chemical changes occur due to electric current.

  • 11.4.6

    Activity 11.6

    This section focuses on the chemical effects of electric current, including the conductivity of liquids, electrolysis, and electroplating.

  • 11.4.7

    Activity 11.7

    This section explores the concept of electroplating and demonstrates how electric current can cause chemical changes in solutions.

  • 11.5

    Key Terms

    This section outlines the key terms related to the chemical effects of electric current, particularly focusing on the conductivity of liquids.

  • 11.6

    What You Have Learnt

    This section discusses the chemical effects of electric current, particularly focusing on how different liquids conduct electricity and introduces the method of electroplating.

  • 11.7

    Exercises

    This section covers the chemical effects of electric current and explores the conduction properties of different liquids.

  • 11.8

    Extended Learning — Activities And Projects

    This section focuses on the chemical effects of electric current, exploring activities involving electrical conduction in liquids and electroplating.

  • 11.9

    Did You Know?

    This section explores the dangers of handling electrical appliances with wet hands and examines the conducting properties of various liquids.

    • Key Summary

    The chapter discusses the chemical effects of electric current, particularly how it interacts with various materials and liquids. It explores the conduction of electricity through liquids, the chemical reactions that occur when current passes through solutions, and the process of electroplating. Through a series of experiments, the distinctions between good and poor conductors of electricity are established, revealing the importance of understanding these concepts in practical applications and safety.

    Key Takeaways

    • Some liquids are good conductors of electricity and some are poor conductors.
    • Most liquids that conduct electricity are solutions of acids, bases, and salts.
    • The passage of an electric current through a conducting liquid causes chemical reactions.

    Key Concepts

    • Conductor: A material that allows electric current to pass through it easily.
    • Electroplating: The process of depositing a layer of any desired metal on another material by means of electricity.
    • LED: Light Emitting Diode, a semiconductor device that emits light when current flows through it.
    • Chemical Effect of Electric Current: Reactions that occur in a solution when an electric current passes through it, leading to changes like gas production or deposition of materials.
    • Electrode: A conductor through which electricity enters or leaves an object, solution, or region.