Which of the following statements about the gaseous state of matter is not correct? The molecules of a substance is in gaseous state

Assessment: WAEC SSCE - Physics - 1988 (Objective) Subject: Physics

Question 1 Report

are in constant state of motion

have different speed

have a temperature which is an average measure of the kinetic energy

have no intermolecular attractive force

have a pressure which is determined by the number of molecules present

Answer Details

The statement "have no intermolecular attractive force" is not correct. In the gaseous state, the molecules of a substance are in constant motion, and they have different speeds. The temperature of the gas is an average measure of the kinetic energy of the molecules. However, the molecules in a gas do have intermolecular attractive forces, but these forces are much weaker than in liquids or solids. The pressure of a gas is determined by the number of molecules present and their kinetic energy.

Read lesson note on Gas Laws (JAMB)

Gas Laws

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Which of the following statements about the gaseous state of matter is not correct? The molecules of a substance is in gaseous state

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