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Lakhmir Singh Solutions Class 8 Science Chapter 4: Materials: Metals and Non-Metals.

This lesson fundamentally clarifies the concept of materials and the differences between metals or non-metals. It primarily deals with the principles to distinguish between metals and non-metals. The chapter, 'Metals And Non-Metals', gives an overview to students with knowledge of the physical and chemical properties considered to be metal or non-metal. In addition, this text provides essential information about various chemical reactions of metals and non-metals with oxygen, water, etc. Thus, the students relate this theory in their practical life and thoroughly understand its context to navigate the subject matter in the chapter.

The ultimate aim of this chapter is to help the students understand the individual properties of metals and non-metals, enabling us to use them in our day-to-day lives. Some of the highlighted properties include:

  • Malleability
  • Ductility
  • Sonorosity
  • Conductivity (Good conductors of heat and electricity)
  • Lustre

The chapter further explores the unique class of Metalloids' materials, whose properties lie between metals and non-metals. It explains the acidic and basic nature and the decreasing order of reactivity series compared to other metals or non-metals. The chapter also teaches the students to learn various chemical names and the tests used to detect specific metals and non-metals.

Students also learn about the importance and the associations of a chemical reaction with the slight mention of gas production. The reactions include the following:
   1. Reactions of metals with acids
   2. Reactions of metals with bases.
   3. Reactions of metals with water
   4. Reactions with other metal salts

The science chapter 4 metals and non-metals contain reactions that are worth mentioning separately, although they also fall under the categories mentioned above. For example, a displacement reaction forms a separate section of redox reactions.

The chapter further explores deeper and discusses the application of metals and non-metals in the numerous departments of household, Medical, Industry, and even in breathing life processes. Students get to learn about the importance of metals and non-metals essential in normal biological functions. The chapter further tells about the conduction of electricity, in brief, makes the student drive their imagination in the machinery field.

 

 

 

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Key features of Aakash Lakhmir Singh Solution Class 8th Science Chapter 4 – Materials: Metals and non-Metals:

  • The Lakhmir Singh science solution of chapter 4 helps students answer some excellent questions to improve the quality of learning. Moreover, by using the solutions, the students can be better prepared for self-assessment and can master basic techniques of solving complex problems.
  • Experts write Aakash institute's solutions after extensive research on every section to provide appropriate and authentic information.
  • Lakhmir Singh solutions, if carefully studied, can clear up all doubts, giving you a deep understanding of complex concepts and topics.

Anthe 2022

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