No, not all lustrous materials are metals. While metals like gold and silver are lustrous, non-metals like diamonds and certain minerals also exhibit luster. Luster is not exclusive to metals but depends on surface properties.
Tiwari Academy Discussion Latest Questions
Yes, all materials share common properties: they have mass, occupy space, and can change state under certain conditions. These fundamental characteristics define matter, regardless of whether the material is solid, liquid, or gas.
The invention of plastic revolutionized daily life by offering versatile, durable, and affordable materials. However, it also introduced environmental challenges, such as pollution and non-biodegradability, making it both a boon and a bane for humanity.
Recyclers check materials for type (paper, glass, metal, plastic), cleanliness, and separability. They avoid buying contaminated or mixed materials, as these complicate recycling processes and reduce the value of the recyclable materials.
Materials that can be recycled include paper, glass, plastic, and metals. These materials are processed to create new products, reducing waste and conserving resources. Recycling helps in environmental conservation and efficient resource management.
Material X is likely a soluble, rigid substance like salt, while material Y is a soft, insoluble substance like clay. X dissolves in water, whereas Y remains unchanged, reflecting its different properties.
Transparent containers allow us to see the contents without opening them, which helps in easily identifying the material inside. This visibility improves convenience and prevents frequent handling, ensuring the stored items remain clean and organized.
Cotton is a natural, breathable material that is soft and comfortable. It absorbs moisture well, making it ideal for clothing. Cotton is also biodegradable and renewable, making it an environmentally friendly choice.
Wood is useful because it is strong, durable, and can be easily shaped. It is used in construction, furniture making, and as fuel. Its natural availability makes it a widely used material.
Materials are substances used to make objects around us. They can be natural, like wood, or man-made, like plastic. Everything we use daily is made from some kind of material.