Give short note on properties of materials and advantage of grouping
Answers
We see a vast variety of objects around us. These objects are of different shapes, colours, textures, properties, and uses. For e.g. a plastic bottle is used to store water whereas a plastic ball is used for playing cricket; traffic lights when green gives the signal to the vehicles to move and when red, give the signal to stop. Diamond, when shaped as the nib of a pen, is used as a cutting tool for glass whereas when designed intricately is sold as jewellery. We observe that same substance with a different texture, shape, and size suffices different purposes. In order to classify the material as per its usage, Sorting Material into groups is necessary.
Advantages of Sorting Material
Disposal: For proper disposal of objects, it is important to sort them into groups of biodegradable and non-biodegradable substances. For degradable substances, dry waste and wet waste should also be separated to ensure longer decay time during the transit period. For nondegradable substances, the objects should be sorted into recyclable and nonrecyclable substances, to reduce wastage of material.
Sorting Material
Storage: In order to allocate suitable containers for storage of objects, it is necessary to sort objects into solid, liquid and gases. For example, vegetables can be carried in cloth bags, but milk and oil cannot. Liquids such as oil and milk can be stored in open mouth containers such as a glass tumbler, but gases such as nitrogen and oxygen cannot be stored as such.
Answer:
The materials can be grouped on the basis of similarities or differences in their properties. Grouping helps in gaining systematic knowledge of things. It also gives a general idea about all members of a group and the differences between members of different groups.
Explanation:
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