The number of molecules in a unit volume of a solid is greater than that in a unit volume of a liquid or gas.
Molecules are made up of atoms
The force of attraction between two molecules of a solid is greater than that between two molecules of a liquid or gas
Molecules of gases are in regular motion
Molecules of a solid vibrate about their mean positions.
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Discussions (6)
How is the correct option D
Atoms are made up of molecules and not the other way around.
And Molecules of gases are in rrgular motion so D cannot be the correct option
Please be careful when picking the correct answers
I think A should be the answer
Because when solid changes to liquid and liquid to gas I don't think there is a change in the number of their molecules
Because it is only the bond holding them together that changes
So molecules of solid is the same as molecule of liquids or gas
A is not the answer because in solids, molecules are tightly packed, so a unit volume of a solid really does contain more molecules than the same volume of a liquid or gas.
D is the correct answer because molecules of gases move in random motion, not regular motion.
D. Molecules of gases are in regular motion
This statement is NOT entirely correct. Molecules of gases are actually in random motion, not regular motion. The kinetic molecular theory states that gas molecules are in constant, random motion, colliding with each other and the walls of their container.
