Q37 of 160 Page 19

Why do gases have neither a fixed shape nor a fixed volume?

In gases, the intermolecular attractions are very poor. The particles are loosely packed at random and the voids between particles are very large. As a result, a gas does not have a definite shape or a definite volume. It will assume the shape and the volume of the container in which it is placed.


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35

Name the three states of matter. Give one example of each.

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State two characteristic properties each of:

(a) A solid


(b) a liquid


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Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having them in imum force of attraction first):

Water, Sugar, Oxygen