Question

Which one of the following statements is not true?

(a) The molecules in a solid vibrate about a fixed position

(b) The molecules in a liquid are arranged in a regular pattern

(c) The molecules in a gas exert negligibly small forces on each other, except during

collisions

(d) The molecules of a gas occupy all the space available

​

Answer 1

Answer:

b

Explanation: Liquid doesn't have any regular shape

Answer 2

Answer:

a) true - In a solid, the atoms are very attracted to one another. The atoms vibrate but stay in fixed positions because of their strong attractions for one another. ... An increase in the motion of the atoms competes with the attraction between atoms and causes them to move a little further apart.

b)not true - The statement b is not true because the molecules in liquid are not arranged in regular pattern.The molecules in a liquid are arranged in regular pattern. The above answer is not true because in liquids the molecules are not arranged in regular pattern. In liquids the molecules are loosely arranged.

c)true - The molecules composing the gas are negligibly small compared to the distances between them. ... Gas molecules exert no attractive or repulsive forces on each other or the container walls; therefore, their collisions are elastic (do not involve a loss of energy).

d)true - Gases do not have definite shape or volume, but it occupies the entire container in which it is confined or molecules of a gas occupy all the space available. They experience negligible intermolecular forces except during collision and do not have any fixed shape or volume. ... For example, oxygen gas.

Explanation: