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Question

a. Compare the properties of solids, liquids and gases in tabular form.

b. Give two reasons for saying that wood is a solid.


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Solution

(a).

SolidLiquidGas
A solid is a kind of substance with structural rigidity and a firm shape that cannot be easily modified.A liquid is a substance that flows freely and has a defined volume but no fixed structure.Gas is a condition of stuff that has no shape but conforms to the geometry of the container in which it is placed.
Solid has a fixed shape and volume.Liquid has no fixed shape but has volume.Gas has neither definite shape nor volume.
Solid cannot flowLiquid flows from higher to lower levels.Gas flows in all directions.
Solid doesn't need a container, for storage.Liquid cannot be stored without a container.Gas needs a closed container for storage.

(b).

The two reasons for saying that wood is a solid are the following:

  1. When exposed to external stress, wood is a hard item that tends to preserve its shape.
  2. Wood has a definite shape and definite volume.

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