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

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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  1. 11
    Chemical Effects Of Electric Current

    This section explores how electric currents can chemically affect materials,...

  2. 11.1
    Do Liquids Conduct Electricity?

    This section explores the conductivity of liquids and how they interact with...

  3. 11.2
    Chemical Effects Of Electric Current

    This section explores how electric currents can induce chemical reactions in...

  4. 11.3
    Electroplating

    Electroplating is a process that involves depositing a layer of one metal...

  5. 11.4

    This section explores the chemical effects of electric current by conducting...

  6. 11.4.1
    Activity 11.1

    This section explores the chemical effects of electric current on various...

  7. 11.4.2
    Activity 11.2

    This section explores whether liquids conduct electricity by experimenting...

  8. 11.4.3
    Activity 11.3

    This section explores the conduction of electricity through various liquids...

  9. 11.4.4
    Activity 11.4

    This section explores the conduction of electricity through liquids,...

  10. 11.4.5
    Activity 11.5

    This section explores the chemical effects of electric current, particularly...

  11. 11.4.6
    Activity 11.6

    This section focuses on the chemical effects of electric current, including...

  12. 11.4.7
    Activity 11.7

    This section explores the concept of electroplating and demonstrates how...

  13. 11.5

    This section outlines the key terms related to the chemical effects of...

  14. 11.6
    What You Have Learnt

    This section discusses the chemical effects of electric current,...

  15. 11.7

    This section covers the chemical effects of electric current and explores...

  16. 11.8
    Extended Learning — Activities And Projects

    This section focuses on the chemical effects of electric current, exploring...

  17. 11.9
    Did You Know?

    This section explores the dangers of handling electrical appliances with wet...

What we have learnt

  • 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.

Additional Learning Materials

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