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NCERT Solutions for Class 8 Science Chapter 4: Materials - Metals and Non-Metals

iacst-2022

In this chapter, we will discuss the chemical and physical properties. The chapter tells us about the different properties of metals and how they are distinguishable from non-metals. We also learn about how metals and non-metals react with different substances. The chapter concludes by listing the different uses of metals and their importance in our lives.

  • The chapter begins by listing the physical properties of metals and non-metals.
  • Physical properties of metals include malleability, ductility, and sonority.
  • Metals are also good conductors of heat and electricity.
  • Examples of metals are aluminium, iron, copper, etc.
  • Non-metals, on the other hand, are not malleable, ductile or sonorous.
  • They are also not usually good conductors of heat and electricity.
  • Examples of non-metals are sulphur, carbon, oxygen, etc.
  • The chapter further tells us about the chemical reaction of metals and non-metals with different substances.
  • We study their reactions with water, reactions with oxygen, reaction with acids, and bases.
  • We also learn about displacement reactions in metals and non-metals.
  • The chapter also entails chemical formulas of different metals and non-metals and also formulas of their chemical reactions.
  • The chapter ends by listing the various uses of metals and non-metals.
  • Metals are used in automobiles, trains, industrial gadgets, aeroplanes, cooking utensils, water boilers, etc.
  • Non-metals are used in fertilisers, water purification, antiseptics, and crackers, and they are also essential for our breathing.

 

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Also See    
NCERT Solutions for Class 8 Science Chapter 1:Crop Production and Management NCERT Solutions for Class 8 Science Chapter 2: Microorganisms - Friend and Foe NCERT Solutions for Class 8 Science Chapter 3: Synthetic Fibres and Plastic
NCERT Solutions for Class 8 Science Chapter 5: Coal and Petroleum NCERT Solutions for Class 8 Science Chapter 6: Combustion and Flame NCERT Solutions for Class 8 Science Chapter 7: Conservation of Plants and Animals
NCERT Solutions for Class 8 Science Chapter 8: Cell – Structure and Functions NCERT Solutions for Class 8 Science Chapter 9: Reproduction in Animals NCERT Solutions for Class 8 Science Chapter 10: Reaching the Age of Adolescence
NCERT Solutions for Class 8 Science Chapter 11: Force and Pressure NCERT Solutions for Class 8 Science Chapter 12: Friction NCERT Solutions for Class 8 Science Chapter 13: Sound
NCERT Solutions for Class 8 Science Chapter 14: Chemical Effects of Electric Current NCERT Solutions for Class 8 Science Chapter 15: Some Natural Phenomena NCERT Solutions for Class 8 Science Chapter 16: Light
NCERT Solutions for Class 8 Science Chapter 17: Stars and the Solar System NCERT Solutions for Class 8 Science Chapter 18: Pollution of Air and Water  

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