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Give reasons: A wooden table should be called a solid.

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NCERT Solution for Class 9 Science Chapter 1
Matter in Our Surroundings
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Intext Questions
Page No-6
Questions No:3 Part: c

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3 Answers

  1. The molecules/particles of wooden table are tightly packed with each other, there is no intermolecular space, it cannot be compressed, it cannot flow, all these characteristics are of solid. So wooden table should be called a solid.

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  2. A wooden table is classified as a solid due to several inherent characteristics associated with solids:

    1. Definite shape and volume: For example, a wooden table retains its size and shape. It does not assume a shape of its container, neither does it behave like a fluid. Solids are clearly delineated with edges but can only be changed when acted upon by external force.

    2.Particle arrangement: Solids have tightly packed particles with a regular arrangement including the wood that formed the table. The table contains compactly-arranged molecules in the state of the wood leading to its firmness and high resistance.

    3. Rigidity: Rigidity is a high level of resistance to deformation which solids possess. The fact that a wooden table is firm means that it usually does not change its shape easily except an amount of weight is added to it.

    4. Low compressibility: Compared to liquids and gases, solids are less compressible. In a case of a solid, the particles are already tightly packed and thus cannot readily be subjected to additional compression. The strength and compressive nature of a wooden table are some of its distinctive characteristics.

    5.High density: Solids usually exhibit higher density than liquids and gases. Because wood is solid, it has more tightly arranged molecules leading to high density.

    Taken together, these characteristics constitute a solid. A wooden table serves as an illustration of one such solid in the classification of states of a matter.

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  3. A wooden table has a definite shape and volume. It is very rigid and cannot be compressed i.e., it has the characteristics of a solid. Hence, a wooden table should be called a solid.

    For more answers visit to website:
    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/

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