NCERT Class 6 Science Chapter 6
Materials Around Us
This chapter helps Class 6 CBSE students identify and classify the variety of materials found in their everyday environment, exploring properties such as appearance, texture, hardness, solubility, and transparency. Students learn to distinguish between natural and man-made materials, and understand how the properties of a material determine its uses. The chapter also introduces the concept of pure substances and mixtures.
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Key Terms
- Material
- Any substance or matter from which objects are made, such as wood, metal, plastic, or glass.
- Solubility
- The ability of a substance (solute) to dissolve in a liquid (solvent) to form a solution.
- Transparency
- The property of a material that allows light to pass through it clearly, making objects visible through it (e.g., glass).
- Lustre
- The shiny appearance of a material, especially metals, when light reflects off its surface.
- Mixture
- A combination of two or more substances that are not chemically combined and can be separated by physical means.
- Pure Substance
- A material made of only one type of particle (element or compound) with a definite set of properties.
Frequently Asked Questions
What are the properties of materials in Class 6 Science Chapter 6?▾
Materials are classified based on properties such as appearance (lustre), texture (smooth or rough), hardness, solubility in water, transparency or opacity, and conductivity of heat and electricity.
What is the difference between transparent, translucent, and opaque materials?▾
Transparent materials allow all light to pass through (like glass), translucent materials allow partial light through (like frosted glass), and opaque materials do not allow any light to pass through (like wood or metal).
What is solubility in Class 6 Science?▾
Solubility is the ability of a substance to dissolve in water or another liquid. Sugar and salt are soluble in water, while sand and oil are insoluble. Temperature can affect how much of a substance dissolves.
What is the difference between natural and man-made materials in Class 6?▾
Natural materials are found directly in nature, such as wood, cotton, wool, and stone. Man-made or synthetic materials are created by humans using chemical processes, such as plastic, nylon, and glass.
What are examples of materials and their uses in Class 6?▾
Iron is used for making tools and construction because it is strong and hard. Cotton is used for making clothes because it is soft and absorbs moisture. Glass is used for windows because it is transparent and rigid.
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