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18 February, 14:12

8. There are different characteristics for each of the states of matter. Which statement

describes a difference between solids and liquids?

a. Temperatures can change a solid to a liquid, but cannot change a liquid to a solid,

b. Solids have a definite volume, and liquids do not have a definite volume.

C. The particles in a solid are much closer together than the particles in a liquid.

d. Solids take on the shape of their containers, and liquids maintain their own

shapes.

9. Which of the following is a property of both liquids and gases, but not solids?

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Answers (1)
  1. 18 February, 16:48
    0
    a. Temperatures increase can change a solid to a liquid, but cannot change a liquid to a solid

    b. The particles in a solid are much closer together than the particles in a liquid.

    Explanation:

    Any material expands when heated and contracts when cooled. So, when a body is heated to a particular temperature, it starts melting and changes into a liquid.

    As the material expands the distance between the atoms or molecules increases and it will become a liquid. So it can move around the material. It doesn't become solid on further heating. But water is an exception where it contracts when heated from 0° to 4° C.

    In solids, these atoms or molecules are closely packed. It is rigidly fixed.

    The solid, as well as the liquid, has a definite volume, but the liquid does not have a definite shape.
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