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NCERT Solutions for Class 8 Science Chapter 4 Materials: Metals and Non-metals are provided in this article. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students. The important topics that are included in this chapter are:
- Physical properties of metals and non-metals
- Chemical properties of metals and non-metals
- Uses of metals and non-metals
Download PDF: NCERT Solutions for Class 8 Science Chapter Materials: Metals and Non-metals
NCERT Solutions for Class 8 Science Chapter 4
NCERT Solutions for Class 8 Science
Metals and Nonmetals are different types of materials present around us. Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal. Metals (like copper and aluminum) are good conductors of heat and electricity, while nonmetals (such as sulfur) are insulators. Materials are distinguished as above, based on their properties.
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Physical Properties of Metals
The physical properties of metals are that metals are hard and have a high tensile strength. Solids at room temperature, except mercury, which is liquid at room temperature. They are sonorous. Good conductors of heat and electricity.
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Physical Properties of Non-metals
Occur as solids, liquids, and gases at room temperature, and are brittle. They are non-malleable, non-ductile, non-sonorous, and are bad conductors of heat and electricity
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Chemical Properties of Metals
Alkali metals (Li, Na, K, etc) react vigorously with water and oxygen or air. Mg reacts with hot water. Al, Fe, and Zn react with steam. Cu, Ag, Pt, Au do not react with water or dilute acids.
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