Chapter Overview
The chapter Materials Around Us introduces students to the variety of materials present in their environment. It discusses how different materials are used to make various objects, based on their physical and chemical properties. It encourages observation, classification, and application of knowledge related to common materials and their characteristics.
Important Keywords
- Material: The substance or matter from which an object is made.
- Natural Material: Materials that are obtained from nature, like wood, water, and cotton.
- Man-Made Material: Materials that are produced by humans, like plastic and glass.
- Hardness: A material’s ability to resist scratching or pressure.
- Transparency: A property that allows light to pass through a material.
- Lustre: The shine or glow of a material, especially metals.
- Solubility: The ability of a substance to dissolve in water.
- Float/Sink: Describes whether a material remains on the surface of water or sinks to the bottom.
Detailed Notes
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