CBSE 8 Science | 11. Chemical Effects of Electric Current by Pavan | Learn Smarter
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Knowledge
11. Chemical Effects of Electric Current

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.

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Sections

  • 11

    Chemical Effects Of Electric Current

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

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

  • 11.4

    Activities

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

    Learning Practice

  • 11.4.1

    Activity 11.1

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

    Learning Practice

  • 11.4.2

    Activity 11.2

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

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

  • 11.4.6

    Activity 11.6

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

    Learning Practice

  • 11.4.7

    Activity 11.7

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

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

  • 11.7

    Exercises

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

    Learning Practice

  • 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.

    Learning Practice

  • 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.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Some liquids are good condu...
  • Most liquids that conduct e...
  • The passage of an electric ...

Final Test

Revision Tests

Chapter FAQs