Question

A chemist is conducting an experiment on a system. At the beginning of the experiment a chemist wants to determine the temperature of the system the system has a definite volume but no definite shape which of the following is most likely also true for the system?

A.The molecules in the system has less kinetic energy than a solid

B. The molecules in the system have more kinetic energy than solid

C. The molecules are held together by stronger attractive forces than a solid

D. Heat flow into the system eventually cause it to have a definite shape

Answer 1

The statement that is true about the system is; " The molecules in the system have more kinetic energy than solid".

There are three states of matter

• Solid
• Liquid
• Gas

The difference between these states of matter lies in the magnitude of intermolecular interaction between particles as well as the kinetic energy of the particles of the substance.

Solid particles have the strongest intermolecular interaction hence they have the lowest kinetic energy.

The magnitude of intermolecular interaction is weaker in liquids than in solids therefore liquid particles have greater kinetic energy than solid particles.

Lastly, gas particles have the greatest kinetic energy because intermolecular forces between them is almost negligible.

Liquids have volume but no definite shape. The description in the question must refer to a liquid system.

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